Badminton

Danish badminton player Peter Gade
Highest governing body	Badminton World Federation
First played	17th century
Characteristics
Contact	No
Team members	Single or doubles
Categorization	Racquet sport
Equipment	Shuttlecock
Olympic	1992–present

Badminton is a racquet sport played by either two opposing players (singles) or two opposing pairs (doubles), who take positions on opposite halves of a rectangular court that is divided by a net. Players score points by striking a shuttlecock with their racquet so that it passes over the net and lands in their opponents' half of the court. Each side may only strike the shuttlecock once before it passes over the net. A rally ends once the shuttlecock has struck the floor.

The shuttlecock (or shuttle) is a feathered projectile whose unique aerodynamic properties cause it to fly differently than the balls used in most racquet sports; in particular, the feathers create much higher drag, causing the shuttlecock to decelerate more rapidly than a ball. Shuttlecocks have a much higher top speed, when compared to other racquet sports. Because shuttlecock flight is affected by wind, competitive badminton is played indoors. Badminton is also played outdoors as a casual recreational activity, often as a garden or beach game.

Since 1992, badminton has been an Olympic sport with five events: men's and women's singles, men's and women's doubles, and mixed doubles, in which each pair consists of a man and a woman. At high levels of play, especially in singles, the sport demands excellent fitness: players require aerobic stamina, agility, explosive strength, speed and precision. It is also a technical sport, requiring good motor coordination and the development of sophisticated racquet movements.

History and development[link]

Game of Battledore and Shuttlecock in 1804

Battledore and Shuttlecock. 1854, from the John Leech Archive^[1]

The beginnings of Badminton can be traced to mid-18th century British India, where it was created by British military officers stationed there.^[2] Early photographs show Englishmen adding a net to the traditional English game of battledore and shuttlecock. Being particularly popular in the British garrison town Poona (now Pune), the game also came to be known as Poona.^[2][3] Initially, balls of wool referred as ball badminton were preferred by the upper classes in windy or wet conditions, but ultimately the shuttlecock stuck. This game was taken by retired officers back to England where it developed and rules were set out.

Although it appears clear that Badminton House, Gloucestershire, owned by the Duke of Beaufort, has given its name to the sports, it is unclear when and why the name was adopted. As early as 1860, Isaac Spratt, a London toy dealer, published a booklet, Badminton Battledore – a new game, but unfortunately no copy has survived.^[4] An 1863 article in The Cornhill Magazine describes badminton as "battledore and shuttlecock played with sides, across a string suspended some five feet from the ground".^[5] This early use has cast doubt on the origin through expatriates in India, though it is known that it was popular there in the 1870s and that the first rules were drawn up in Poonah in 1873.^[4][5]

As early as 1875, veterans returning from India started a club in Folkestone. Until 1887, the sport was played in England under the rules that prevailed in British India. The Bath Badminton Club standardized the rules and made the game applicable to English ideas. J.H.E. Hart drew up revised basic regulations in 1887 and, with Bagnel Wild, again in 1890.^[4] In 1893, the Badminton Association of England published the first set of rules according to these regulations, similar to today's rules, and officially launched badminton in a house called "Dunbar" at 6 Waverley Grove, Portsmouth, England on September 13 of that year.^[6] They also started the All England Open Badminton Championships, the first badminton competition in the world, in 1899.

The International Badminton Federation (IBF) (now known as Badminton World Federation) was established in 1934 with Canada, Denmark, England, France, the Netherlands, Ireland, New Zealand, Scotland, and Wales as its founding members. India joined as an affiliate in 1936. The BWF now governs international badminton and develops the sport globally.

While initiated in England, competitive men's badminton in Europe has traditionally been dominated by Denmark. Asian nations, however, have been the most dominant ones at the world level. Indonesia, South Korea, China, and Malaysia along with Denmark are among the nations that have consistently produced world-class players in the past few decades, with China being the greatest force in both men's and women's competition in recent years.

Rules[link]

The following information is a simplified summary of badminton rules based on the BWF Statutes publication, Laws of Badminton.^[7]

Playing court dimensions[link]

Badminton court, isometric view

The court is rectangular and divided into halves by a net. Courts are usually marked for both singles and doubles play, although badminton rules permit a court to be marked for singles only.^[7] The doubles court is wider than the singles court, but both are of same length. The exception, which often causes confusion to newer players, is that the doubles court has a shorter serve-length dimension.

The full width of the court is 6.1 metres (20 ft), and in singles this width is reduced to 5.18 metres (17 ft). The full length of the court is 13.4 metres (44 ft). The service courts are marked by a centre line dividing the width of the court, by a short service line at a distance of 1.98 metres (6 ft 6 inch) from the net, and by the outer side and back boundaries. In doubles, the service court is also marked by a long service line, which is 0.76 metres (2 ft 6 inch) from the back boundary.

The net is 1.55 metres (5 ft 1 inch) high at the edges and 1.524 metres (5 ft) high in the centre. The net posts are placed over the doubles sidelines, even when singles is played.

The minimum height for the ceiling above the court is not mentioned in the Laws of Badminton. Nonetheless, a badminton court will not be suitable if the ceiling is likely to be hit on a high serve.

Equipment rules[link]

Badminton rules restrict the design and size of racquets and shuttlecocks. Badminton rules also provide for testing a shuttlecock for the correct speed:

3.1 

To test a shuttlecock, use a full underhand stroke which makes contact with the shuttlecock over the back boundary line. The shuttlecock shall be hit at an upward angle and in a direction parallel to the side lines.

3.2 

A shuttlecock of the correct speed will land not less than 530 mm and not more than 990 mm short of the other back boundary line.

Scoring system and service[link]

The legal bounds of a badminton court during various stages of a rally for singles and doubles games.

Basics[link]

Each game is played to 21 points, with players scoring a point whenever they win a rally regardless of whether they served ^[7] (this differs from the old system where players could only win a point on their serve and each game was played to 15 points). A match is the best of three games.

At the start of the rally, the server and receiver stand in diagonally opposite service courts (see court dimensions). The server hits the shuttlecock so that it would land in the receiver's service court. This is similar to tennis, except that a badminton serve must be hit below waist height and with the racquet shaft pointing downwards, the shuttlecock is not allowed to bounce and in badminton, the players stand inside their service courts unlike tennis.

When the serving side loses a rally, the serve immediately passes to their opponent(s) (this differs from the old system where sometimes the serve passes to the doubles partner for what is known as a "second serve").

In singles, the server stands in their right service court when their score is even, and in her/his left service court when her/his score is odd.

In doubles, if the serving side wins a rally, the same player continues to serve, but he/she changes service courts so that she/he serves to a different opponent each time. If the opponents win the rally and their new score is even, the player in the right service court serves; if odd, the player in the left service court serves. The players' service courts are determined by their positions at the start of the previous rally, not by where they were standing at the end of the rally. A consequence of this system is that, each time a side regains the service, the server will be the player who did not serve last time.

Details[link]

When the server serves, the shuttlecock must pass over the short service line on the opponents' court or it will count as a fault.

If the score reaches 20-all, then the game continues until one side gains a two point lead (such as 24–22), up to a maximum of 30 points (30–29 is a winning score).

At the start of a match, the shuttlecock is cast and the side towards which the shuttlecock is pointing serves first. Alternatively, a coin may be tossed, with the winners choosing whether to serve or receive first, or choosing which end of the court to occupy, and their opponents making the leftover the remaining choice.

In subsequent games, the winners of the previous game serve first. Matches are best out of three: a player or pair must win two games (of 21 points each) to win the match. For the first rally of any doubles game, the serving pair may decide who serves and the receiving pair may decide who receives. The players change ends at the start of the second game; if the match reaches a third game, they change ends both at the start of the game and when the leading player's or pair's score reaches 11 points.

The server and receiver must remain within their service courts, without touching the boundary lines, until the server strikes the shuttlecock. The other two players may stand wherever they wish, so long as they do not block the vision of the server or receiver.

Lets[link]

If a let is called, the rally is stopped and replayed with no change to the score. Lets may occur because of some unexpected disturbance such as a shuttlecock landing on court (having been hit there by players on an adjacent court) or in small halls the shuttle may touch an overhead rail which can be classed as a let.

If the receiver is not ready when the service is delivered, a let shall be called; yet, if the receiver attempts to return the shuttlecock, he shall be judged to have been ready.

Equipment[link]

Badminton racquets

Racquets[link]

Badminton racquets are lightweight, with top quality racquets weighing between 70 and 95 grams (2.4 to 3.3 ounces) not including grip or strings.^[8][9] They are composed of many different materials ranging from carbon fibre composite (graphite reinforced plastic) to solid steel, which may be augmented by a variety of materials. Carbon fibre has an excellent strength to weight ratio, is stiff, and gives excellent kinetic energy transfer. Before the adoption of carbon fibre composite, racquets were made of light metals such as aluminium. Earlier still, racquets were made of wood. Cheap racquets are still often made of metals such as steel, but wooden racquets are no longer manufactured for the ordinary market, because of their excessive mass and cost. Nowadays, nanomaterials such as fullerene and carbon nanotubes are added to rackets giving them greater durability^{[citation needed]}.

There is a wide variety of racquet designs, although the laws limit the racquet size and shape. Different racquets have playing characteristics that appeal to different players. The traditional oval head shape is still available, but an isometric head shape is increasingly common in new racquets.

Strings[link]

Badminton strings are thin, high performing strings in the range of about 0.62 to 0.73 mm thickness. Thicker strings are more durable, but many players prefer the feel of thinner strings. String tension is normally in the range of 80 to 160 N (18 to 36 lbf). Recreational players generally string at lower tensions than professionals, typically between 80 and 110 N (18 and 25 lbf). Professionals string between about 110 and 160 N (25 and 36 lbf). Some string manufacturers measure the thickness of their strings under tension so they are actually thicker then than specified when slack. Ashaway Micropower is actually 0.7mm but Yonex BG-66 is about 0.72mm.

It is often argued that high string tensions improve control, whereas low string tensions increase power.^[10] The arguments for this generally rely on crude mechanical reasoning, such as claiming that a lower tension string bed is more bouncy and therefore provides more power. This is in fact incorrect, for a higher string tension can cause the shuttle to slide off the racquet and hence make it harder to hit a shot accurately. An alternative view suggests that the optimum tension for power depends on the player:^[8] the faster and more accurately a player can swing their racquet, the higher the tension for maximum power. Neither view has been subjected to a rigorous mechanical analysis, nor is there clear evidence in favour of one or the other. The most effective way for a player to find a good string tension is to experiment.

Grip[link]

The choice of grip allows a player to increase the thickness of his racquet handle and choose a comfortable surface to hold. A player may build up the handle with one or several grips before applying the final layer.

Players may choose between a variety of grip materials. The most common choices are PU synthetic grips or towelling grips. Grip choice is a matter of personal preference. Players often find that sweat becomes a problem; in this case, a drying agent may be applied to the grip or hands, sweatbands may be used, the player may choose another grip material or change his grip more frequently.

There are two main types of grip: replacement grips and overgrips. Replacement grips are thicker, and are often used to increase the size of the handle. Overgrips are thinner (less than 1 mm), and are often used as the final layer. Many players, however, prefer to use replacement grips as the final layer. Towelling grips are always replacement grips. Replacement grips have an adhesive backing, whereas overgrips have only a small patch of adhesive at the start of the tape and must be applied under tension; overgrips are more convenient for players who change grips frequently, because they may be removed more rapidly without damaging the underlying material.

Shuttlecocks with feathers

A shuttlecock with a plastic skirt

Shuttlecock[link]

A shuttlecock (often abbreviated to shuttle; also called a birdie) is a high-drag projectile, with an open conical shape: the cone is formed from sixteen overlapping feathers embedded into a rounded cork base. The cork is covered with thin leather or synthetic material.

Synthetic shuttles are often used by recreational players to reduce their costs as feathered shuttles break easily. These nylon shuttles may be constructed with either natural cork or synthetic foam base, and a plastic skirt.

Shoes[link]

Badminton shoes are lightweight with soles of rubber or similar high-grip, non-marking materials.

Compared to running shoes, badminton shoes have little lateral support. High levels of lateral support are useful for activities where lateral motion is undesirable and unexpected. Badminton, however, requires powerful lateral movements. A highly built-up lateral support will not be able to protect the foot in badminton; instead, it will encourage catastrophic collapse at the point where the shoe's support fails, and the player's ankles are not ready for the sudden loading, which can cause sprains. For this reason, players should choose badminton shoes rather than general trainers or running shoes, because proper badminton shoes will have a very thin sole, lower a person's centre of gravity, and therefore result in fewer injuries. Players should also ensure that they learn safe and proper footwork, with the knee and foot in alignment on all lunges. This is more than just a safety concern: proper footwork is also critical in order to move effectively around the court.

Strokes[link]

This unreferenced section requires citations to ensure verifiability.

A player flies high at the Golden Gate Badminton Club (GGBC) in Menlo Park, 2006

Forehand and backhand[link]

Badminton offers a wide variety of basic strokes, and players require a high level of skill to perform all of them effectively. All strokes can be played either forehand or backhand. A player's forehand side is the same side as their playing hand: for a right-handed player, the forehand side is their right side and the backhand side is their left side. Forehand strokes are hit with the front of the hand leading (like hitting with the palm), whereas backhand strokes are hit with the back of the hand leading (like hitting with the knuckles). Players frequently play certain strokes on the forehand side with a backhand hitting action, and vice versa.

In the forecourt and midcourt, most strokes can be played equally effectively on either the forehand or backhand side; but in the rearcourt, players will attempt to play as many strokes as possible on their forehands, often preferring to play a round-the-head forehand overhead (a forehand "on the backhand side") rather than attempt a backhand overhead. Playing a backhand overhead has two main disadvantages. First, the player must turn their back to their opponents, restricting their view of them and the court. Second, backhand overheads cannot be hit with as much power as forehands: the hitting action is limited by the shoulder joint, which permits a much greater range of movement for a forehand overhead than for a backhand. The backhand clear is considered by most players and coaches to be the most difficult basic stroke in the game, since precise technique is needed in order to muster enough power for the shuttlecock to travel the full length of the court. For the same reason, backhand smashes tend to be weak.

Position of the shuttlecock and receiving player[link]

A player does a forehand service, 2009, Philadelphia.

The choice of stroke depends on how near the shuttlecock is to the net, whether it is above net height, and where an opponent is currently positioned: players have much better attacking options if they can reach the shuttlecock well above net height, especially if it is also close to the net. In the forecourt, a high shuttlecock will be met with a net kill, hitting it steeply downwards and attempting to win the rally immediately. This is why it is best to drop the shuttlecock just over the net in this situation. In the midcourt, a high shuttlecock will usually be met with a powerful smash, also hitting downwards and hoping for an outright winner or a weak reply. Athletic jump smashes, where players jump upwards for a steeper smash angle, are a common and spectacular element of elite men's doubles play. In the rearcourt, players strive to hit the shuttlecock while it is still above them, rather than allowing it to drop lower. This overhead hitting allows them to play smashes, clears (hitting the shuttlecock high and to the back of the opponents' court), and dropshots (hitting the shuttlecock so that it falls softly downwards into the opponents' forecourt). If the shuttlecock has dropped lower, then a smash is impossible and a full-length, high clear is difficult.

Vertical position of the shuttlecock[link]

When the shuttlecock is well below net height, players have no choice but to hit upwards. Lifts, where the shuttlecock is hit upwards to the back of the opponents' court, can be played from all parts of the court. If a player does not lift, his only remaining option is to push the shuttlecock softly back to the net: in the forecourt this is called a netshot; in the midcourt or rearcourt, it is often called a push or block.

When the shuttlecock is near to net height, players can hit drives, which travel flat and rapidly over the net into the opponents' rear midcourt and rearcourt. Pushes may also be hit flatter, placing the shuttlecock into the front midcourt. Drives and pushes may be played from the midcourt or forecourt, and are most often used in doubles: they are an attempt to regain the attack, rather than choosing to lift the shuttlecock and defend against smashes. After a successful drive or push, the opponents will often be forced to lift the shuttlecock.

Other factors[link]

When defending against a smash, players have three basic options: lift, block, or drive. In singles, a block to the net is the most common reply. In doubles, a lift is the safest option but it usually allows the opponents to continue smashing; blocks and drives are counter-attacking strokes, but may be intercepted by the smasher's partner. Many players use a backhand hitting action for returning smashes on both the forehand and backhand sides, because backhands are more effective than forehands at covering smashes directed to the body. It is very good tool to play hard shots which are directed towards your body.

The service is restricted by the Laws and presents its own array of stroke choices. Unlike in tennis, the servers racket must be pointing in a downward direction to deliver the serve so normally the shuttle must be hit upwards to pass over the net. The server can choose a low serve into the forecourt (like a push), or a lift to the back of the service court, or a flat drive serve. Lifted serves may be either high serves, where the shuttlecock is lifted so high that it falls almost vertically at the back of the court, or flick serves, where the shuttlecock is lifted to a lesser height but falls sooner.

Deception[link]

Once players have mastered these basic strokes, they can hit the shuttlecock from and to any part of the court, powerfully and softly as required. Beyond the basics, however, badminton offers rich potential for advanced stroke skills that provide a competitive advantage. Because badminton players have to cover a short distance as quickly as possible, the purpose of many advanced strokes is to deceive the opponent, so that either he is tricked into believing that a different stroke is being played, or he is forced to delay his movement until he actually sees the shuttle's direction. "Deception" in badminton is often used in both of these senses. When a player is genuinely deceived, he will often lose the point immediately because he cannot change his direction quickly enough to reach the shuttlecock. Experienced players will be aware of the trick and cautious not to move too early, but the attempted deception is still useful because it forces the opponent to delay his movement slightly. Against weaker players whose intended strokes are obvious, an experienced player may move before the shuttlecock has been hit, anticipating the stroke to gain an advantage.

Slicing and using a shortened hitting action are the two main technical devices that facilitate deception. Slicing involves hitting the shuttlecock with an angled racquet face, causing it to travel in a different direction than suggested by the body or arm movement. Slicing also causes the shuttlecock to travel much slower than the arm movement suggests. For example, a good crosscourt sliced dropshot will use a hitting action that suggests a straight clear or smash, deceiving the opponent about both the power and direction of the shuttlecock. A more sophisticated slicing action involves brushing the strings around the shuttlecock during the hit, in order to make the shuttlecock spin. This can be used to improve the shuttle's trajectory, by making it dip more rapidly as it passes the net; for example, a sliced low serve can travel slightly faster than a normal low serve, yet land on the same spot. Spinning the shuttlecock is also used to create spinning netshots (also called tumbling netshots), in which the shuttlecock turns over itself several times (tumbles) before stabilizing; sometimes the shuttlecock remains inverted instead of tumbling. The main advantage of a spinning netshot is that the opponent will be unwilling to address the shuttlecock until it has stopped tumbling, since hitting the feathers will result in an unpredictable stroke. Spinning netshots are especially important for high level singles players.

The lightness of modern racquets allows players to use a very short hitting action for many strokes, thereby maintaining the option to hit a powerful or a soft stroke until the last possible moment. For example, a singles player may hold his racquet ready for a netshot, but then flick the shuttlecock to the back instead with a shallow lift when she or he notices the opponent has moved before the actual shot was played. A shallow lift takes less time to reach the ground and as mentioned above a rally is over when the shuttlecock touches the ground. This makes the opponent's task of covering the whole court much more difficult than if the lift was hit higher and with a bigger, obvious swing. A short hitting action is not only useful for deception: it also allows the player to hit powerful strokes when he has no time for a big arm swing. A big arm swing is also usually not advised in badminton because bigger swings make it more difficult to recover for the next shot in fast exchanges. The use of grip tightening is crucial to these techniques, and is often described as finger power. Elite players develop finger power to the extent that they can hit some power strokes, such as net kills, with less than a 10 cm (4 in) racquet swing.

It is also possible to reverse this style of deception, by suggesting a powerful stroke before slowing down the hitting action to play a soft stroke. In general, this latter style of deception is more common in the rearcourt (for example, dropshots disguised as smashes), whereas the former style is more common in the forecourt and midcourt (for example, lifts disguised as netshots).

Deception is not limited to slicing and short hitting actions. Players may also use double motion, where they make an initial racquet movement in one direction before withdrawing the racquet to hit in another direction. Players will often do this to send opponents in the wrong direction. The racquet movement is typically used to suggest a straight angle but then play the stroke cross court, or vice versa. Triple motion is also possible, but this is very rare in actual play. An alternative to double motion is to use a racquet head fake, where the initial motion is continued but the racquet is turned during the hit. This produces a smaller change in direction, but does not require as much time.

Strategy[link]

This unreferenced section requires citations to ensure verifiability.

To win in badminton, players need to employ a wide variety of strokes in the right situations. These range from powerful jumping smashes to delicate tumbling net returns. Often rallies finish with a smash, but setting up the smash requires subtler strokes. For example, a netshot can force the opponent to lift the shuttlecock, which gives an opportunity to smash. If the netshot is tight and tumbling, then the opponent's lift will not reach the back of the court, which makes the subsequent smash much harder to return.

Deception is also important. Expert players prepare for many different strokes that look identical, and use slicing to deceive their opponents about the speed or direction of the stroke. If an opponent tries to anticipate the stroke, he may move in the wrong direction and may be unable to change his body momentum in time to reach the shuttlecock.

Doubles[link]

Both pairs will try to gain and maintain the attack, smashing downwards when possible. Whenever possible, a pair will adopt an ideal attacking formation with one player hitting down from the rearcourt, and his partner in the midcourt intercepting all smash returns except the lift. If the rearcourt attacker plays a dropshot, his partner will move into the forecourt to threaten the net reply. If a pair cannot hit downwards, they will use flat strokes in an attempt to gain the attack. If a pair is forced to lift or clear the shuttlecock, then they must defend: they will adopt a side-by-side position in the rear midcourt, to cover the full width of their court against the opponents' smashes. In doubles, players generally smash to the middle ground between two players in order to take advantage of confusion and clashes.

At high levels of play, the backhand serve has become popular to the extent that forehand serves have become fairly rare at a high level of play. The straight low serve is used most frequently, in an attempt to prevent the opponents gaining the attack immediately. Flick serves are used to prevent the opponent from anticipating the low serve and attacking it decisively.

At high levels of play, doubles rallies are extremely fast. Men's doubles is the most aggressive form of badminton, with a high proportion of powerful jump smashes.

Singles[link]

The singles court is narrower than the doubles court, but the same length. Since one person needs to cover the entire court, singles tactics are based on forcing the opponent to move as much as possible; this means that singles strokes are normally directed to the corners of the court. Players exploit the length of the court by combining lifts and clears with drop shots and net shots. Smashing tends to be less prominent in singles than in doubles because the smasher has no partner to follow up his effort and is thus vulnerable to a skillfully placed return. Moreover, frequent smashing can be exhausting in singles where the conservation of a player's energy is a at a premium. However, players with strong smashes will sometimes use the shot to create openings, and players commonly smash weak returns to try to end rallies.

In singles, players will often start the rally with a forehand high serve or with a flick serve. Low serves are also used frequently, either forehand or backhand. Drive serves are rare.

At high levels of play, singles demands extraordinary fitness. Singles is a game of patient positional manoeuvring, unlike the all-out aggression of doubles.

Mixed doubles[link]

In mixed doubles, both pairs typically try to maintain an attacking formation with the woman at the front and the man at the back. This is because the male players are usually substantially stronger, and can therefore produce smashes that are more powerful. As a result, mixed doubles require greater tactical awareness and subtler positional play. Clever opponents will try to reverse the ideal position, by forcing the woman towards the back or the man towards the front. In order to protect against this danger, mixed players must be careful and systematic in their shot selection.^[11]

At high levels of play, the formations will generally be more flexible: the top women players are capable of playing powerfully from the back-court, and will happily do so if required. When the opportunity arises, however, the pair will switch back to the standard mixed attacking position, with the woman in front.

Governing bodies[link]

The Badminton World Federation (BWF) is the internationally recognized governing body of the sport. Five regional confederations are associated with the BWF:

• Asia: Badminton Asia Confederation (BAC)
• Africa: Badminton Confederation of Africa (BCA)
• Americas: Badminton Pan Am (North America and South America belong to the same confederation; BPA)
• Europe: Badminton Europe (BE)
• Oceania: Badminton Oceania (BO)

Competitions[link]

A mens doubles match. The blue lines are those for the badminton court. The other coloured lines denote uses for other sports – such complexity being common in multi-use sports halls.

The BWF organizes several international competitions, including the Thomas Cup, the premier men's international team event first held in 1948–1949, and the Uber Cup, the women's equivalent first held in 1956–1957. The competitions take place once every two years. More than 50 national teams compete in qualifying tournaments within continental confederations for a place in the finals. The final tournament involves 12 teams, following an increase from eight teams in 2004.

The Sudirman Cup, a gender-mixed international team event held once every two years, began in 1989. Teams are divided into seven levels based on the performance of each country. To win the tournament, a country must perform well across all five disciplines (men's doubles and singles, women's doubles and singles, and mixed doubles). Like association football (soccer), it features a promotion and relegation system in every level.

Badminton was a demonstration event in the 1972 and 1988 Summer Olympics. It became an official Summer Olympic sport at the Barcelona Olympics in 1992 and its gold medals now generally rate as the sport's most coveted prizes for individual players.

In the BWF World Championships, first held in 1977, currently only the highest ranked 64 players in the world, and a maximum of four from each country, can participate in any category. In both the Olympic and BWF World competitions restrictions on the number of participants from any one country have caused some controversy because they sometimes result in excluding elite world level players from the strongest badminton nations. The Thomas, Uber, and Sudirman Cups, the Olympics, and the BWF World (and World Junior Championships), are all categorized as level one tournaments.

At the start of 2007, the BWF introduced a new tournament structure for the highest level tournaments aside from those in level one: the BWF Super Series. This level two tournament series, a tour for the world's elite players, stages twelve open tournaments around the world with 32 players (half the previous limit). The players collect points that determine whether they can play in Super Series Final held at the year end. Among the tournaments in this series is the venerable All-England Championships, first held in 1900, which was once considered the unofficial world championships of the sport.^[12]

Level three tournaments consist of Grand Prix Gold and Grand Prix event. Top players can collect the world ranking points and enable them to play in the BWF Super Series open tournaments. These include the regional competitions in Asia (Badminton Asia Championships) and Europe (European Badminton Championships), which produce the world's best players as well as the Pan America Badminton Championships.

The level four tournaments, known as International Challenge, International Series and Future Series, encourage participation by junior players.^[13]

Comparisons with other racquet sports[link]

This section may contain original research. Please improve it by verifying the claims made and adding references. Statements consisting only of original research may be removed. More details may be available on the talk page. (May 2010)

Badminton is frequently compared to tennis. The following is a list of uncontentious comparisons:

• In tennis, the ball may bounce once before the player hits it; in badminton, the rally ends once the shuttlecock touches the floor.
• In tennis, the serve is dominant to the extent that the server is expected to win most of his service games (at advanced level & onwards); a break of service, where the server loses the game, is of major importance in a match. In badminton a server has far less advantage, and is unlikely to score an 'ace' (unreturnable serve).
• In tennis, the server is allowed two attempts to make a correct serve; in badminton, the server is allowed only one attempt.
• The tennis court is larger than the badminton court.
• Tennis racquets are about four times as heavy as badminton racquets, 10–12 ounces (approximately 284–340 grams) versus 2–3 ounces (70–105 grams).^[14][15] Tennis balls are more than eleven times heavier than shuttlecocks, 57 grams versus 5 grams.^[16][17]
• The fastest recorded tennis stroke is Ivo Karlovic's 156 mph (251 km/h) serve,^[18] whereas the fastest badminton stroke during gameplay was Fu Haifeng's 206 mph (332 km/h) recorded smash.^[19]

Comparisons of speed and athletic requirements[link]

Statistics such as the smash speed, above, prompt badminton enthusiasts to make other comparisons that are more contentious. For example, it is often claimed that badminton is the fastest racquet sport.^{[citation needed]} Although badminton holds the record for the fastest initial speed of a racket sports projectile, the shuttlecock decelerates substantially faster than other projectiles such as tennis balls. In turn, this qualification must be qualified by consideration of the distance over which the shuttlecock travels: a smashed shuttlecock travels a shorter distance than a tennis ball during a serve. Badminton's claim as the fastest racquet sport might also be based on reaction time requirements, but arguably table tennis requires even faster reaction times.

While fans of badminton and tennis often claim that their sport is the more physically demanding, such comparisons are difficult to make objectively because of the differing demands of the games. No formal study currently exists evaluating the physical condition of the players or demands during game play.

Comparisons of technique[link]

Badminton and tennis techniques differ substantially. The lightness of the shuttlecock and of badminton rackets allow badminton players to make use of the wrist and fingers much more than tennis players; in tennis the wrist is normally held stable, and playing with a mobile wrist may lead to injury. For the same reasons, badminton players can generate power from a short racket swing: for some strokes such as net kills, an elite player's swing may be less than 5 cm (2 in). For strokes that require more power, a longer swing will typically be used, but the badminton racket swing will rarely be as long as a typical tennis swing.

It is often asserted that power in badminton strokes comes mainly from the wrist. This is a misconception and may be criticised for two reasons. First, it is strictly speaking a category error: the wrist is a joint, not a muscle; the forearm muscles control its movement. Second, wrist movements are weak when compared to forearm or upper arm movements. Badminton biomechanics have not been the subject of extensive scientific study, but some studies confirm the minor role of the wrist in power generation, and indicate that the major contributions to power come from internal and external rotations of the upper and lower arm.^[20] Modern coaching resources such as the Badminton England Technique DVD reflect these ideas by emphasising forearm rotation rather than wrist movements.^[21]

Distinctive characteristics of the shuttlecock[link]

The shuttlecock differs greatly from the balls used in most other racquet sports.

Aerodynamic drag and stability[link]

The feathers impart substantial drag, causing the shuttlecock to decelerate greatly over distance. The shuttlecock is also extremely aerodynamically stable: regardless of initial orientation, it will turn to fly cork-first, and remain in the cork-first orientation.

One consequence of the shuttlecock's drag is that it requires considerable skill to hit it the full length of the court, which is not the case for most racquet sports. The drag also influences the flight path of a lifted (lobbed) shuttlecock: the parabola of its flight is heavily skewed so that it falls at a steeper angle than it rises. With very high serves, the shuttlecock may even fall vertically.

Spin[link]

Balls may be spun to alter their bounce (for example, topspin and backspin in tennis), and players may slice the ball (strike it with an angled racket face) to produce such spin; but, since the shuttlecock is not allowed to bounce, this does not apply to badminton.

Slicing the shuttlecock so that it spins, however, does have applications, and some are particular to badminton. (See Basic strokes for an explanation of technical terms.)

• Slicing the shuttlecock from the side may cause it to travel in a different direction from the direction suggested by the player's racket or body movement. This is used to deceive opponents.
• Slicing the shuttlecock from the side may cause it to follow a slightly curved path (as seen from above), and the deceleration imparted by the spin causes sliced strokes to slow down more suddenly towards the end of their flight path. This can be used to create dropshots and smashes that dip more steeply after they pass the net.
• When playing a netshot, slicing underneath the shuttlecock may cause it to turn over itself (tumble) several times as it passes the net. This is called a spinning netshot or tumbling netshot. The opponent will be unwilling to address the shuttlecock until it has corrected its orientation.

Due to the way that its feathers overlap, a shuttlecock also has a slight natural spin about its axis of rotational symmetry. The spin is in a counter-clockwise direction as seen from above when dropping a shuttlecock. This natural spin affects certain strokes: a tumbling netshot is more effective if the slicing action is from right to left, rather than from left to right.^[22]

See also[link]

Badminton portal

• Ball badminton
• Hanetsuki
• List of racquet sports
• Speed badminton

References[link]

Books[link]

• Bernd-Volker Brahms, Badminton Handbook, Meyer & Meyer, Aachen 2010, ISBN 978-1-84126-298-7

External links[link]

Wikimedia Commons has media related to: Badminton

Look up badminton in Wiktionary, the free dictionary.

Wikisource has the text of the 1911 Encyclopædia Britannica article Badminton (game).

• Badminton at the Open Directory Project
• Badminton World Federation
  • Laws of Badminton
  • Simplified Rules
• Badminton Asia Confederation
• Badminton Pan Am
• Badminton Oceania
• Badminton Europe
• Badminton Confederation of Africa

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Lin Dan
Personal information
Nickname(s)	Super Dan
Birth name	林丹
Born	(1983-10-14) October 14, 1983 (age 28) Longyan, Fujian, China
Height	1.78 m (5 ft 10 in)
Weight	70 kg (150 lb; 11 st)
Country	China
Handedness	Left
Men's singles
Highest Ranking	1 (February, 2004)
Current Ranking	2 (May, 2012[1])
Medal record Competitor for  China Men's badminton Olympic Games Gold 2008 Beijing Men's singles World Championships Gold 2011 London Men's Singles Gold 2009 Hyderabad Men's singles Gold 2007 Kuala Lumpur Men's singles Gold 2006 Madrid Men's singles Silver 2005 Anaheim Men's singles World Cup Gold 2006 Yiyang Men's singles Gold 2005 Yiyang Men's singles Thomas Cup Gold 2012 Wuhan Team Gold 2010 Kuala Lumpur Team Gold 2008 Jakarta Team Gold 2006 Tokyo Team Gold 2004 Jakarta Team Bronze 2002 Guangzhou Team Sudirman Cup Gold 2011 Qingdao Team Gold 2009 Guangzhou Team Gold 2007 Glasgow Team Gold 2005 Beijing Team Asian Games Gold 2010 Guangzhou Men's singles Gold 2010 Guangzhou Team Gold 2006 Doha Team Silver 2006 Doha Men's singles Bronze 2002 Busan Team Asian Championships Gold 2011 Chengdu Men's singles Gold 2010 New Delhi Men's singles Silver 2001 Manila Men's singles Bronze 2008 Johor Bahru Men's singles
BWF Profile

Lin Dan (Chinese: 林丹; pinyin: Lín Dān; born October 14, 1983 in Longyan, Fujian^[2]) is a professional badminton player from China. He is a four-time world champion, five time All England champion and the reigning Olympic champion. Widely considered to be the greatest badminton player of all time,^[3][4] by the age of 28 Lin had completed the "Super Grand Slam", having won all nine major titles in world badminton: Olympic Games, World Championships, World Cup, Thomas Cup, Sudirman Cup, Super Series Masters Finals, All England Open, Asian Games, and Asia Championships, becoming the first and only player to achieve this feat.^[5][6]

He has been nicknamed "Super Dan" by his fans.^[7]

Personal life[link]

In his early years, Lin was encouraged to learn to play piano by his parents, but chose to play badminton at the age of five. He joined the sports troop of the People's Liberation Army at the age of 13 and has been part of China's national badminton team since 2001 when he was 18.^[8][9][10]

On April 10, 2008, he created controversy when he struck coach Ji Xinpeng in front of his teammates and reporters during the warm-up tournament ahead of the Thomas Cup. The incident was reportedly triggered by Lin being unhappy with Ji's starting lineup for the tournament.^[11]

Lin has been in a romantic relationship with Xie Xingfang, herself a former world champion badminton player, since 2003.^[12] They were quietly married on December 13, 2010 in Haizhu, Guangzhou. Xie initially denied but later admitted the news when reporters got the evidence. Lin reacted angrily towards the news and insisted that it was a personal matter between him and Xie.^[13]

Career[link]

Junior events[link]

Lin emerged as a winner in the 2000 Asian Junior Championships in both the team and boys' singles events. He was also a member of the winning Chinese team and a boys' singles semi-finalist in the 2000 World Junior Championships.^[14]

2001–2003[link]

2001 marked the start of Lin's professional career. In his first final, at the Asian Badminton Championships, he was thrashed by compatriot Xia Xuanze.^[15]

In 2002 Lin took his first title at the Korea Open.^[16] He was a member of China's 2002 Thomas Cup squad which defeated Sweden (5–0),^[17] Denmark (3–2),^[18] and Korea (4–1) to reach the semifinals.^[19] However, Lin didn't play in the semifinal tie against Malaysia, which saw China's team tumble to a 1–3 defeat.^[20] Lin participated in another four tournaments without coming close to victory. He was knocked out in the first round of the Singapore,^[21] and Indonesia Opens,^[22] second round of the Denmark Open,^[23] and third round of the China Open.^[24] In October Lin was defeated in the semifinals of the Asian Games team competition which directly blew China's hope of a gold medal.^[25]

Lin started the 2003 season with a third round defeat in the All England Open.^[26] He reached a final later in the year at the Japan Open but was beaten by his compatriot Xia Xuanze once again.^[27] Lin then made his inaugural debut in the World Championships in Birmingham, England. He breezed past Per-Henrik Croona and Przemysław Wacha in the first two rounds, but was beaten by Xia again in his third round match.^[28] After the world meet, he was eliminated in the semifinals of the Singapore Open,^[29] third round of the Indonesia Open,^[30] and second round of the Malaysia Open.^[31] However, Lin ended the season strongly by capturing the Denmark,^[32] Hong Kong,^[33] and China Opens,^[34] and finishing runner-up at the German Open.

2004[link]

Lin had a good start to 2004, earning the BWF's number one world ranking for the first time in February. He helped China win the qualifying round of Thomas Cup and then captured the Swiss Open.^[35][36] He won his first ever All England Open title by beating Peter Gade in the final.^[37] He reached the semifinal of the Japan Open before going off to Jakarta, Indonesia in May for the Thomas Cup campaign.^[38]

In Thomas Cup, Lin helped China to an excellent start in which they thrashed United States and defending champion Indonesia 5–0 respectively to enter the quarterfinals.^[39] Lin then cruised past Shoji Sato and Lee Hyun-il in quarterfinal and semifinal ties against Japan and Korea respectively, each ending in 3–0 wins for China.^[40][41] In the final, he beat Peter Gade in straight games to give China the lead before the Chinese team eventually won three matches to one. China thus took the crown, ending a 14 years drought in the tournament.^[42]

Lin suffered setbacks later in the 2004 season when he was ousted in the quarterfinals of the Malaysia Open,^[43] and was reported to have a leg injury in mid-July, prior to the Olympic Games.^[44] Lin "crashed" in his first Olympic Games when, as the first seed, he was ousted early by Singapore's Ronald Susilo, who claimed Lin was "too eager to win".^[45][46] However, Lin bounced back with three titles at the Denmark,^[47] German,^[48] and China Opens,^[49] and ended the season as a semi-finalist at the Indonesia Open.^[50]

2005[link]

Lin retained his number one world ranking during 2005, winning his second German and Hong Kong Open titles, as well as the Japan Open, China Masters, and World Cup tournaments.^{[51][52][53][54][55]} He also helped China recapture the Sudirman Cup when it shut-out both defending champion South Korea in the semifinals and Indonesia in the final.^[56][57]

Lin failed to retain his All England title, losing a three set final to teammate Chen Hong,^[58] and he was beaten in the final of the Malaysia Open by another rising star, Lee Chong Wei.^[59] In his bid to capture his first world title at Anaheim California, he beat Kennevic Asuncion, Shoji Sato, Lee Hyun-il, and Peter Gade in succession to reach the final.^[60][61][62] There he was decisively beaten by Taufik Hidayat.^[63] Lin was also eliminated in the semifinals of the Singapore Open and the quarterfinals of the China Open.^[64]

2006[link]

Lin started the season by reaching the semifinals of the German Open,^[65] and had a same result in China Masters and China Open.^[66][67] He failed to win the Malaysia Open in June, which saw his opponent Lee Chong Wei had a superb display to save the title after a 13–20 down in rubber game,^[68] and also lost to Taufik Hidayat in Asian Games final.^[69]

However, he won six individual titles in the season. He recapturing All England Open,^[70] won Chinese Taipei Open,^[71] Macau Open,^[72] Hong Kong Open,^[73] Japan Open,^[74] and his first world title after beating his compatriot Bao Chunlai in the final.^[75]

In May, Lin and his teammates had extended China's Thomas Cup reign, shut out Denmark 3–0 for second consecutive title.^[76]

2007[link]

Lin Dan entered 2007 with a loss to South Korea's Park Sung-hwan in the round of 16 at the Malaysia Open. A week later he captured the Korea Open by defeating Chinese teammate Chen Jin in the final. He went on to win the German Open and then the All England championships again, crushing compatriot Chen Yu 21–13, 21–12. In June, Lin Dan was part of Team China in the Sudirman Cup, held in Glasgow, Scotland. The Chinese team retained the cup after beating Indonesia 3–0 in the final. Later in the season Lin Dan defeated Wong Choong Hann of Malaysia and became the China Masters champion for 2007. In August, Lin Dan extended his reign as the world champion when he beat Indonesia's Sony Dwi Kuncoro 21–11, 22–20 in the final of the tournament held in Kuala Lumpur, Malaysia. Lin Dan thus became the first man since Yang Yang to win back to back world championships.

2008[link]

Lin started the season with a defeat in the final of the Korea Open to Lee Hyun-il.^[77] It was a match filled with controversy as Lin had a scuffle with South Korea's coach Li Mao after a line call dispute. Lin refused to apologise and received no punishment from Badminton World Federation (BWF) after its probe of the altercation.^[78][79] In March he suffered another defeat to his compatriot Chen Jin in the final of the All England Open,^[80] which was followed by press accusations that Lin "gave" the match to Chen in order to increase Chen's ranking points for Olympic qualification.^[81] In the following week, Lin won his first Swiss Open.^[82] At the Asia Championships, Lin was again accused of helping his compatriot when his loss to Chen Jin in the semifinals ensured Chen's qualification for the Olympic Games.^[83]

In Thomas Cup, Lin won every match he played except his semifinal clash with Lee Chong Wei, and helped China to a third successive title in the tournament. After easy victories over Nigeria and Canada in the group stage, China defeated Thailand in the quarterfinals.^[84] Despite Lin's loss to Lee Chong Wei in the semifinals, China still managed to qualify for the final over Malaysia 3–2 ^[85] and retained the title after beating South Korea 3–1.^[86]

Lin won the Thailand Open, his last tournament before the 2008 Olympic Games.^[87]

In Olympic Games, he beat Hong Kong's Ng Wei in the first round,^[88] Park Sung-hwan in the second round,^[89] and Peter Gade in the quarterfinals.^[90] He then beat his teammate Chen Jin in straight sets to set up a "dream" final against Lee Chong Wei.^[91] However, the final was a one-sided match as Lin demolished Lee 21–12, 21–8, and became the first men's singles player to win the Olympic gold as a first seed.^[92]

Not back in action until the China Open in November, Lin again beat Lee in the final,^[93] before losing to Chen Jin once again in the Hong Kong Open.^[94] Lin was eligible to participate in the Masters Finals, but due to the withdrawal of China, he didn't take part in the tournament.^[95]

2009[link]

In March, Lin won his fourth All England title by defeating Lee Chong Wei, in only his first appearance since November 2008,^[96] but lost to the same opponent in the final of Swiss Open a week later.^[97]

He then participated in the Sudirman Cup in which he helped China to a 5–0 victory against England^[98] and another clean swept against Japan^[99] and Indonesia.^[100] In the semifinals, it was another showdown between Lin and Lee Chong Wei in a tie against Malaysia, and Lin went on to win in straight games to set up a clash against Korea in the final.^[101] In the final, Lin had no trouble beating Park Sung-hwan, helping China to secure the Cup for the third time in a row without conceding a match to any opponent in the tournament.^[102]

In June, Lin failed to win the Indonesia Open after being knocked out in the quarter-finals.^[103] It was the second tournament he failed to win, aside from an upset by South Korean's Choi Ho-jin in December during the East Asian Games final.^[104]

Lin then went on to sweep all titles in tournaments he participated in between August and November. He became the first player to win the World Championships three times in Hyderabad, India, beating Chen Jin in the final.^[105] Later Dan would go on to win his fourth China Masters title^[106] and first French Open title.^[107] He closed the season with the China Open title^[108] before heading to Hong Kong for the East Asian Games.

2010[link]

Lin started the season with failure to defend the All England Open title by losing in the quarterfinals,^[109] and had another quarterfinals exit in the Swiss Open.^[110] He only won his first seasonal title in the Badminton Asia Championships, which also marked his first title in the championships.^[111]

Lin had his fifth appearance in Thomas Cup. After an easy win against Peru,^[112] he won the double encounter against Korea's Park Sung-hwan in the second group tie and the quarterfinals respectively.^[113] In the semifinals, he defeated Lee Chong Wei in straight games to help China reach the final,^[114] before outclassing Indonesia for a fourth consecutive title.^[115]

After the Thomas Cup triumph, Lin played in the World Championships in Paris, France. He won his opening match^[116] and then beat Henri Hurskainen and Bao Chunlai in the second and third rounds respectively^[117][118] before being upset by Park Sung-hwan in the quarterfinals. The day also saw his arch rival Lee Chong Wei exit from the tournament.^[119] Lin then bounced back to win the China Masters,^[120] but continued his lowlight in the season after being beaten in the final of the Japan Open,^[121] and conceding walkovers in the quarterfinals of the China Open,^[122] and Hong Kong Open respectively.^[123]

However, Lin managed to win his first ever Asian Games gold medal in November by beating Lee Chong Wei in final, thus becoming the first player to win all of the present major titles available to Asians in badminton, both individual and national team.^[124]

2011[link]

Lin Dan in 2011 German Open.

Lin began the year with a withdrawal in the Malaysia Open's quarterfinals, which marked his third withdrawal in a row since late 2010. This action caused criticism mostly by Taufik Hidayat, who wanted the Badminton World Federation (BWF) to investigate.^[125] His mother denied that he retired on purpose, and cited he had a waist injury.^[126] However, he sprang back to win the first ever million dollar badminton tournament, Korea Open, a week later by defeating Lee Chong Wei in a rubber game final.^[127] He then won the German Open, beating his compatriot Chen Jin in the final.^[128]

However, Lin's hope to become the first player to win five All England titles in the open era was dashed^[129] when he was defeated by Lee Chong Wei in the final.^[130] He then won his second Asian Championships in April on a day which saw China sweep all five titles.^[131] Lin helped China to a fourth consecutive Sudirman Cup title in May, defeating Denmark 3–0 in the final.^[132] In June, Lin withdrew from the Singapore Open final due to gastric flu, this drew the jeers from fans in the stadium.^[133] Just few days later, he was stunned by Sho Sasaki in the second round of Indonesia Open.^[134]

In August, he won his fourth World Championships title by beating Lee Chong Wei in final in Wembley Arena, a venue which will host the same competition for 2012 Summer Olympics. This dashed Lee's hope of becoming the first Malaysian to win a gold medal in the World Championships.^[135]

In September, he was ousted in the semi-finals of China Masters,^[136] and withdrew from the semifinals of Japan Open.^[137] This was followed up by a shock exit in the second round of the Denmark Open to Hong Kong player Wong Wing Ki,^[138] and retired in the semifinals of French Open despite leading the match, stated it is due to paronychia.^[139][140] The retirement also marked his sixth in the season, many media quest the retirement was due to the strategic consideration to let China team have full quota in men's singles for 2012 Olympics.^[141] However, Li Yongbo said Lin retirement is not a "gift", this is due to that BWF stated that each top players are compulsory to participate in number of tournament and Lin needs a better condition towards the Olympics.^[142] Lin voice frustrated that the peak schedule was the reason he had a most retirement in a season.^[143] He ended the last three tournaments in high note, won his fifth Hong Kong Open and China Open title respectively,^[144][145] and his first ever Super Series Master Finals title.^[146]

2012[link]

Lin started the year by losing to Lee in the final of the Korea Open,^[147] and a second round defeat in Malaysia Open.^[148] He won his fifth German Open title in March, and his first of the season.^[149] He then won the All England Open in March, thus became the first man in 33 years to win five titles.^[150] In April, Lin withdrew from semifinals of the Badminton Asia Championships due to waist injury, and the move also helped his compatriot Chen Jin secure the Olympics berth.^[151]

He helped China to fifth consecutive Thomas Cup title without losing a single match in every tie he played.^[152]

Awards[link]

Lin won the Eddie Choong Player of the Year award for two consecutive years in 2006 and 2007.^[153] He also secured the BWF Best Male Player of the Year in 2008.^[154] Lin was voted Most Valuable Player (MVP) during the 2010 Asian Games in Guangzhou, China.^[155] On January 16, 2011, he was voted as the 2010 best male athlete in CCTV Sports Personality of the Year for his clean sweep in major badminton titles.^[156]

Individual finals[link]

Titles (49)[link]

Year	Tournament	Opponent in final	Score
2002	Korea Open (1)	Shon Seung-mo	1–7, 7–3, 7–3, 7–5
2003	Denmark Open (1)	Chen Yu	15–4, 15–6
2003	Hong Kong Open (1)	Boonsak Ponsana	15–4, 9–15, 15–8
2003	China Open (1)	Wong Choong Hann	17–16, 15–12
2004	Swiss Open (1)	Bao Chunlai	15–12, 15–6
2004	All England Open (1)	Peter Gade	9–15, 15–5, 15–8
2004	Denmark Open (2)	Xia Xuanze	15–12, 15–11
2004	German Open (1)	Xia Xuanze	17–16, 15–9
2004	China Open (2)	Bao Chunlai	15–11, 15–10
2005	German Open (2)	Muhammad Hafiz Hashim	15–8, 15–8
2005	Japan Open (1)	Chen Hong	15–4, 2–0 (retired)
2005	China Masters (1)	Bao Chunlai	15–6, 15–13
2005	Hong Kong Open (2)	Bao Chunlai	15–10, 15–4
2005	World Cup (1)	Boonsak Ponsana	21–13, 21–11
2006	All England Open (2)	Lee Hyun-il	15–7, 15–7
2006	Chinese Taipei Open	Lee Chong Wei	21–18, 12–21, 21–11
2006	Macau Open	Lee Chong Wei	21–18, 18–21, 21–18
2006	Hong Kong Open (3)	Lee Chong Wei	21–19, 8–21, 21–16
2006	World Championships (1)	Bao Chunlai	18–21, 21–17, 21–12
2006	Japan Open (2)	Taufik Hidayat	16–21, 21–16, 21–3
2006	World Cup (2)	Chen Yu	21–19, 19–21, 21–17
2007	Korea Open (2)	Chen Jin	21–14, 21–19
2007	German Open (3)	Chen Yu	walkover
2007	All England Open (3)	Chen Yu	21–13, 21–12
2007	China Masters (2)	Wong Choong Hann	21–19, 21–9
2007	World Championships (2)	Sony Dwi Kuncoro	21–11, 22–20
2007	Denmark Open (3)	Bao Chunlai	21–15, 21–12
2007	Hong Kong Open (4)	Lee Chong Wei	9–21, 21–15, 21–15
2008	Swiss Open (2)	Lee Chong Wei	21–13, 21–18
2008	Thailand Open	Boonsak Ponsana	17–21, 21–15, 21–13
2008	Olympic Games	Lee Chong Wei	21–12, 21–8
2008	China Open (3)	Lee Chong Wei	21–18, 21–9
2009	All England Open (4)	Lee Chong Wei	21–19, 21–12
2009	World Championships (3)	Chen Jin	21–18, 21–16
2009	China Masters (3)	Boonsak Ponsana	21–17, 21–17
2009	French Open	Taufik Hidayat	21–6, 21–15
2009	China Open (4)	Jan Ø. Jørgensen	21–12, 21–12
2010	Badminton Asia Championships (1)	Wang Zhengming	21–17, 21–15
2010	China Masters (4)	Chen Long	21–15, 13–21, 21–14
2010	Asian Games	Lee Chong Wei	21–13, 15–21, 21–10
2011	Korea Open (3)	Lee Chong Wei	21–19, 14–21, 21–16
2011	German Open (4)	Chen Jin	21–19, 21–11
2011	Badminton Asia Championships (2)	Bao Chunlai	21–19, 21–13
2011	World Championships (4)	Lee Chong Wei	20–22, 21–14, 23–21
2011	Hong Kong Open (5)	Chen Jin	21–12, 21–19
2011	China Open (5)	Chen Long	21–17, 26–24
2011	Super Series Masters Finals	Chen Long	21–12, 21–16
2012	German Open (5)	Simon Santoso	21–11, 21–11
2012	All England Open (5)	Lee Chong Wei	21–19, 6–2 (retired)

Runners-up (18)[link]

Year	Tournament	Opponent in final	Score
2001	Asian Badminton Championships	Xia Xuanze	10–15, 9–15
2001	Denmark Open	Bao Chunlai	5–7, 1–7, 0–7
2003	Japan Open	Xia Xuanze	12–15, 10–15
2003	German Open	Lee Hyun-il	4–15, 4–15
2005	All England Open	Chen Hong	15–8, 5–15, 2–15
2005	Malaysia Open	Lee Chong Wei	15–17, 15–9, 9–15
2005	World Championships	Taufik Hidayat	3–15, 7–15
2006	Malaysia Open	Lee Chong Wei	18–21, 21–18, 21–23
2006	Asian Games	Taufik Hidayat	15–21, 20–22
2008	Korea Open	Lee Hyun-il	21–4, 21–23, 23–25
2008	All England Open	Chen Jin	20–22, 23–25
2008	Hong Kong Open	Chen Jin	9–21, 21–9, 17–21
2009	Swiss Open	Lee Chong Wei	16–21, 16–21
2009	East Asian Games	Choi Ho-jin	20–22, 17–21
2010	Japan Open	Lee Chong Wei	20–22, 21–16, 17–21
2011	All England Open	Lee Chong Wei	17–21, 17–21
2011	Singapore Open	Chen Jin	Walkover
2012	Korea Open	Lee Chong Wei	21–12, 18–21, 14–21

References[link]