Lu Yen-hsun (Chinese: 盧彥勳; born August 14, 1983 in Taoyuan, Taiwan) is a Taiwanese professional tennis player. He goes by the nickname Rendy. His favorite surface is hardcourt.

Lu was an accomplished junior's player, reaching career-high #3 in the ITF circuit (February 5, 2001). During his junior years, he defeated a handful of future ATP stars, including Robin Söderling, Mario Ančić and Philipp Kohlschreiber.

In 2004, Lu became the first player from Taiwan to break into ATP Top 100, thanks to a solid performance in the Challenger circuit in the first half of 2004. Continuing on from the good form, he started to participate in many tour level events. Although he suffered many defeats, his effort yielded some good wins. The most notable win came on the grass court in Queen's, where he gained his first top 10 win by defeating then world number 3 Guillermo Coria.

A series of injuries caused his ranking to fall rapidly in 2005. He did not participate in any tournaments after walking over in the second round from Ho Chi Minh City.

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.

David Ferrer Ern (Valencian pronunciation: [daˈvit feˈreɾ ˈɛɾn]; born April 2, 1982 in Xàbia, Marina Alta, Valencian Community) is a Spanish professional tennis player who lives in Valencia, Spain who is currently World No. 5 in the ATP Rankings and is the second-highest ranked Spaniard behind World No. 2 Rafael Nadal. He turned professional in 2000. Ferrer is known as a clay-court specialist, although he has had success on hard courts as well, as evidenced by his semifinal appearances at the 2007 US Open and 2011 Australian Open. He was part of the Spain Davis Cup team that won the finals in 2008, 2009 and 2011. He was also runner-up at the Tennis Masters Cup in 2007. He first achieved a top–10 ranking in 2006 and reached a career high ranking of no. 4.

Ferrer was born in Xàbia in the province of Alicante, but he moved to Gandia at age 13, followed two years later by a move to Barcelona to attend the Catalan Tennis Federation. He spent nine months at Equelite, Juan Carlos Ferrero's Academy in Villena, before moving back to Xàbia while practicing in Denia.

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.

Tommy Haas (born 3 April 1978 as Thomas Mario Haas) is a German and recently naturalized American professional tennis player. He has competed on the ATP Tour since 1996. After breaking into the World Top 100 in 1997, and reaching a career-high singles ranking of World No. 2 on 13 May 2002, Haas's career has been interrupted by injuries: whilst a professional, he has twice dropped out of the world rankings due to being inactive for twelve months. His first period of injury saw him miss the whole of the 2003 season, and he did not return to the world's top ten until 2007. He also missed over a year's tennis between February 2010 and June 2011, but has since returned to play on the Tour.

Haas has never won a Grand Slam tournament, his best result being three-time semi-finalist at the Australian Open and one semi-final at Wimbledon. He has won thirteen career titles in singles and doubles, including one Masters tournament, and has a silver medal from the 2000 Summer Olympics.

His equipment include Solfire, Lacoste and Nike for his clothes and shoes, respectively. He switched to using Head racquets in 2009 after using Dunlop Sport racquets for most of his career.