Gilles Müller (born May 9, 1983) is a Luxembourgish professional tennis player. He was a US Open junior champion and is the most successful male tennis player in the history of his country. He was born and raised in Schifflange and he resides in Leudelange. His career-high ATP singles ranking is World No. 42.

In 2001, the year Müller turned pro, he reached the final of the boys' singles at the 2001 Wimbledon Championships, but was defeated by Swiss Roman Valent, 3–6, 7–5, 6–3. Later that year, Müller won the boys' singles final at the 2001 US Open by defeating Taiwanese Yeu-Tzuoo Wang, 7–6, 6–2. Müller finished the year 2001 as the World No. 1 junior.

Remarkable results against top players were Müller's victories over Andre Agassi in the semifinals of the 2004 Legg Mason Tennis Classic in Washington, D.C., over Rafael Nadal in the second round of 2005 Wimbledon, and over Andy Roddick in the first round of the 2005 US Open.

At the 2008 US Open Gilles Müller, then ranked 130, had to go through the qualification tournament. He reached the main draw, where he consecutively beat Laurent Recouderc, former No. 2 Tommy Haas, Nicolás Almagro, and fifth-seeded Nikolay Davydenko, advancing to the quarter-finals of a Grand Slam tournament for the first time in his career. He had not been sure that he would even qualify, and so he had not even booked a hotel room for the tournament. He then lost to defending champion and eventual winner Roger Federer, 6–7, 4–6, 6–7.

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.

Andrew "Andy" Murray (born 15 May 1987) is a Scottish professional tennis player, ranked No. 4 in the world, and was ranked No. 2 from 17 to 31 August 2009. Murray achieved a top-10 ranking by the Association of Tennis Professionals for the first time on 16 April 2007. He has been runner-up in three Grand Slam finals: the 2008 US Open, the 2010 Australian Open and the 2011 Australian Open, losing the first two to Roger Federer and the third to Novak Djokovic. In 2011, Murray became only the seventh player in the Open Era to reach the semi-finals of all four Grand Slam tournaments in one year.

Andy Murray was born to Will and Judy in Glasgow, Scotland. His maternal grandfather, Roy Erskine, was a professional footballer who played reserve team matches for Hibernian and in the Scottish Football League for Stirling Albion and Cowdenbeath. Murray's brother, Jamie, is also a professional tennis player, playing on the doubles circuit. Following the separation of his parents when he was nine years old, Andy and Jamie lived with their father. Murray later attended Dunblane High School. Murray is in a five-year relationship with Kim Sears, who is regularly seen attending his matches. The relationship ended briefly in 2009 before they reconciled a short time later in 2010.

Andrew Stephen "Andy" Roddick (born August 30, 1982) is an American professional tennis player and a former World No. 1. He is currently the third highest-ranked American player, behind Mardy Fish and John Isner.

He became a Grand Slam singles champion when he won the title at the 2003 US Open, defeating Juan Carlos Ferrero in the finals, which currently makes him the last North American male player to win a grand slam singles event. Roddick has reached four other Grand Slam finals (Wimbledon in 2004, 2005 and 2009, and the US Open in 2006), losing to Roger Federer each time. He is married to Brooklyn Decker, a Sports Illustrated swimwear model and actress.

Roddick was born in Omaha, Nebraska to Jerry and Blanche Roddick. Roddick's father was a businessman and his mother was a school teacher. She now directs the Andy Roddick Foundation. Roddick has two older brothers, Lawrence and John (All-American tennis player at University of Georgia (1996–98) and head tennis coach at the University of Oklahoma), who were both promising tennis players at a young age.

Izak van der Merwe (born 26 January 1984) is a male South African tennis player.

In June 2008, van der Merwe qualified into the 2008 Wimbledon main draw, beating World No. 177 Miguel Ángel López Jaén, World No. 126 Kristian Pless, and World No. 246 Frédéric Niemeyer. He would then go on to lose to Guillermo García-López 7–5, 6–2, 6–2.

He says he tried to base his play on the former Wimbledon champion, Pete Sampras. >^{[dead link]}