José Javier "Chucho" Acasuso (born October 20, 1982 in Posadas, Misiones) is a former professional male tennis player from Argentina. Like many of his fellow countrymen, he favours clay. He is known for his strong serve and his hard groundstrokes off both sides. His clothes sponsor is Topper and his racquet sponsor is Head.

Acasuso began playing tennis at the age of two, when his father took his brother and sister to his grandfather's tennis club. Reportedly, he got the nickname of "Chucho" from the fact that, when he was a child, he used to say his name was "José Acachucho." Acasuso played both basketball and tennis up until the age of 12, and then gave up basketball for tennis. Like Carlos Moyà, Acasuso is a natural left-hander, but plays tennis right-handed.

Acasuso turned professional in 2000, playing futures and challenger events. In 2001, he made an immediate impact in his first ATP tournament in Buenos Aires, where he defeated former No. 10 player Félix Mantilla in the last round of the qualifying to make the main draw, and then defeated compatriots Franco Squillari in the quarter-finals and Gastón Gaudio in the semi-finals. However, he lost to then-number-1 player Gustavo Kuerten 6–1, 6–3. Later in the year, he won his first challenger event in Bermuda and finished the year ranked at 86 in the world an improvement of 89 places from the previous year.

Marat Mikhailovich Safin (Russian: Марат Михайлович Сафин, Tatar: Марат Мөбин улы Сафин, Marat Möbin uğlı Safin) (born January 27, 1980) is a Russian politician and retired tennis player of Tatar descent. Safin won two grand slams and reached the World No. 1 ranking during his career. He was also famous for his emotional outbursts and sometimes fiery temper on court. Safin also holds the record for most broken racquets in a year with 87. Safin is the older brother of former World No. 1 WTA player Dinara Safina (Dinara Mikhailovna Safina) (Russian: Динара Михайловна Сафина), born April 27, 1986 in Moscow. They are the first brother-sister tandem in tennis history to both achieve No. 1 rankings.

Safin began his professional career in 1997, and held the No. 1 world ranking for a total of 9 weeks between November 2000 and April 2001. He won his first Grand Slam title at the 2000 U.S. Open after defeating Pete Sampras, and won the 2005 Australian Open, defeating Australian Lleyton Hewitt in the final. Safin helped lead Russia to Davis Cup victories in 2002 and 2006. Despite his dislike of grass courts, he became the first Russian man to reach the semi-finals of Wimbledon at the 2008 Wimbledon Championships. At the time of his final Grand Slam appearance at the US Open on September 2, 2009, Safin was No. 58 in the official world men's tennis rankings.

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.

Fernando Francisco González Ciuffardi (born July 29, 1980) is a retired professional tennis player from Chile. He is known for having one of the hardest forehands on the circuit. In Spanish he is called El Bombardero de La Reina ("The La Reina Bomber") and Mano de Piedra ("Stone Hand"). The English-language media has labeled him "Gonzo".

González reached at least the quarterfinal round of all four Grand Slam tournaments. He played his first major final at the 2007 Australian Open, losing to top-ranked Roger Federer. He is the fourth male tennis player in history to have won each Olympic medal (gold in doubles and bronze in singles at Athens 2004, and silver in singles at Beijing 2008). Throughout his career, he has defeated many former no. 1 players, including Lleyton Hewitt, Andre Agassi, Roger Federer (all while they held the top spot), Novak Djokovic, Rafael Nadal, Andy Roddick, Juan Carlos Ferrero, Carlos Moyà, Gustavo Kuerten, Marat Safin, and Pete Sampras. González qualified twice for the year-end Masters Cup event and was runner-up at two Masters Series tournaments. He is arguably Chile's best tennis player of the 2000s.

Stefan Koubek (born January 2, 1977 in Klagenfurt) is a tennis player from Austria. Koubek plays left-handed with a double-handed backhand. His idol when growing up was Thomas Muster. Koubek has won three titles, two of which have come on hardcourts; despite this, he says his favorite surface is clay.

His nickname is Cooley or Stef. Koubek's hobbies include sports cars, video games, golf and skiing.

Koubek turned professional in 1994, losing his first match in St Pölten. Between 1994 and 1998, Koubek mostly played in ATP Futures and ATP Challenger Series events.

In 1997 he jumped up 184 positions in the rankings, thanks to good results in Challenger tournaments, reaching finals in Ulm and Alpirsbach. 1998 saw Koubek win his first Challenger event in Alpirsbach; later that same year he lost to Younes El Aynaoui in the final of Maia. Koubek compiled a 33-20 record for the year.

Koubek won his first ATP title in 1999 at Atlanta as a qualifier. He achieved this losing only one set in the whole tournament, overcoming Sébastien Grosjean in the final 6–1 6–2. Koubek reached the fourth round in his French Open debut, losing to Àlex Corretja; to date this is his best performance at this event. Koubek made the final of Bournemouth, losing to Adrian Voinea, and helped his country Austria back into the World Group of Davis Cup by defeating Sweden 3–2 in a promotion tie. Koubek was second only to Albert Costa in wins on clay during the 1999 season, with 28 match victories.