Radek Štěpánek ((Czech pronunciation: [ˈradɛk ˈʃcɛpaːnɛk]; born 27 November 1978 in Karviná) is a professional tennis player from the Czech Republic. His career-high singles ranking is World No. 8.

Štěpánek turned professional in 1997. He started on tour as a doubles specialist, winning 12 ATP titles. Since 2002, Štěpánek has focused on being a better singles player while still playing top-level doubles. He is known for his after-the-shot grunting, his over-the-top celebrations and his many relationships with WTA players.

Štěpánek first came to mainstream notice when he defeated former world No. 1 Gustavo Kuerten in five sets on his way to the third round of the 2003 Australian Open.

2006 was Štěpánek's best year to date; he found himself on the verge of getting into the top ten of ATP rankings, as he defeated José Acasuso in the semi-finals of the Masters Series event in Hamburg. He went on to lose the final in straight sets against Spain's Tommy Robredo. At that point, he achieved a career-high ATP world ranking of No. 11 in singles.

Roger Federer (German pronunciation: [ˈfeːdəʁɐ]) (born 8 August 1981) is a Swiss professional tennis player who held the ATP No. 1 position for a record 237 consecutive weeks from 2 February 2004 to 18 August 2008. Federer has occupied the #1 ranking for 285 overall weeks, one week short of the record 286 weeks held by Pete Sampras. As of 28 May 2012, he is ranked World No. 3. Federer has won a men's record 16 Grand Slam singles titles. He is one of seven male players to capture the career Grand Slam and one of three (with Andre Agassi and Rafael Nadal) to do so on three different surfaces (clay, grass, and hard courts). He is the only male player in tennis history to have reached the title match of each Grand Slam tournament at least five times and also the final at each of the nine ATP Masters 1000 Tournaments. Many sports analysts, tennis critics, and former and current players consider Federer to be the greatest tennis player of all time.

Federer has appeared in an unprecedented 23 career Grand Slam tournament finals, including a men's record ten in a row, and appeared in 18 of 19 finals from the 2005 Wimbledon Championships through the 2010 Australian Open, the lone exception being the 2008 Australian Open. He holds the record of reaching the semifinals or better of 23 consecutive Grand Slam tournaments over five and a half years, from the 2004 Wimbledon Championships through the 2010 Australian Open. At the 2012 Australian Open, he reached a record 31st consecutive Grand Slam quarterfinal. During the course of his run at the 2012 French Open in Roland Garros, Federer eclipsed Jimmy Connors long standing record of 233 match wins in Grand Slam tournaments when he defeated Adrian Ungur in a second round match.

Robin Haase (born 6 April 1987 in The Hague) is a Dutch tennis player. Haase is currently the highest-ranked Dutch player, achieving his career-high ATP singles ranking of World No. 39 in May 2012. He is left-handed, but plays with right hand. He is endorsed by Robey, Head, Tempo-Team and iTennis.nl.

Haase was a promising player in the Junior level, where he reached as high as no. 3 in the Juniors’ rankings on 14 March 2005. Later on in 2005, he lost the final of the Junior Grand Slam Tournament at Wimbledon to Jérémy Chardy in his last tournament at the Junior level.

Haase started 2006 ranked 665. In June he played his first ATP tournament at Rosmalen losing in the first round against Juan Carlos Ferrero 4-6, 6-3, 2-6.

In September he made his debut for the Dutch Davis Cup team in the World Group Play-offs against the Czech Republic, losing against Tomas Berdych in straight sets and winning from Jan Hernych when the competition already was decided.

In November Haase won his first Challenger tournament in Nashville, beating 2 top-100 players in the process.

Stanislas "The Manislas" Wawrinka (born 28 March 1985 in Lausanne) is a Swiss professional tennis player. He also holds German citizenship as his father is German. His career-high singles ranking is World No. 9, achieved on 9 June 2008. He considers clay his best surface and his backhand his best shot. He won the gold medal for Switzerland in the men's doubles event at the 2008 Summer Olympics in Beijing, partnering Roger Federer, by beating Swedish team Simon Aspelin/Thomas Johansson in the final. They were also honoured with the 2008 Swiss Team of the Year Award.

John McEnroe believes Wawrinka has one of the most powerful backhands he has ever seen and describes him as having "the best one-handed backhand in the game today".

Wawrinka stopped attending regular schooling at age 15 to focus full-time on tennis. However, he continued his schooling by distance education with the French organization CNED, which offered him greater flexibility.

Wawrinka started playing international junior events at age 14 and entered the satellite circuit the following year. He compiled an outstanding junior career, winning the 2003 French Open Junior championships and finishing as the no. 14 junior.

Fabio 'The Fog' Fognini (born 24 May 1987 in Sanremo, Italy) is a professional tennis player and the current Italian No. 2. His career-high singles ranking is World No. 32, which he reached on June 20, 2011 after reaching the quarter-finals of the 2011 French Open. His favourite surface is the red clay of Paris, where he also reached the quarter-finals as a junior in 2004.

Fognini was born to Silvana and Fulvio, a businessman, and has a younger sister called Fulvia. He began playing tennis when he was four years old and is also a fan of football and motorbike racing. Fognini speaks Italian, English, Spanish and French.

Fognini began his professional career by playing a variety of Futures and Challenger tournaments, winning his first Futures title in 2005 at Spain #1 and another at Italy #9. In 2005, he also finished runner-up at Italy #3 and qualified for his first ATP Challenger tournament at Palermo. During 2006, Fognini had moderate success at Challengers and, after qualifying, made his debut on the ATP World Tour at Buenos Aires. He was defeated in the first round by Carlos Moyá, the eventual champion.