Lleyton Glynn Hewitt is an Australian former world No. 1 tennis player. He is the most recent Australian man to win a major singles title, at the 2001 US Open and 2002 Wimbledon Championships. In November 2001, Hewitt became, at the time, the youngest man to reach No. 1 in the ATP singles rankings, at the age of 20 years, 8 months and 26 days. In total, he won 30 singles titles and 3 doubles titles, including the 2000 US Open men's doubles title, back-to-back Tour Finals titles in 2001 and 2002, and the Davis Cup with Australia in 1999 and 2003. Between 1997 and 2016, Hewitt contested a record twenty consecutive Australian Open men's singles tournaments, his best result being runner-up in 2005. He was also the runner-up at the 2004 US Open.
Jan-Michael Charles Gambill is an American former professional tennis player who made his professional debut in 1996. His career-high singles ranking is world No. 14, which he achieved on June 18, 2001. Best known for his unusual double-handed forehand, Gambill reached the quarterfinals of the 2000 Wimbledon Championships, the final of the 2001 Miami Masters, and won three singles titles.
Gaël Sébastien Monfils is a French professional tennis player. He has been ranked as high as world No. 6 in singles by the ATP, which he achieved in November 2016. His career highlights include reaching two major semifinals at the 2008 French Open and 2016 US Open, and three ATP Masters 1000 finals – two at the Paris Masters in 2009 and 2010, and the other at the 2016 Monte-Carlo Masters. Monfils was named the ATP Newcomer of the Year in 2005. He has won twelve ATP Tour singles titles and has been runner-up twenty-two times. He has reached at least one ATP Tour singles final every year since 2005 for 19 consecutive seasons, and is one of five players in the Open Era to do so for 19 or more seasons. He is also eighth among active players with over 550 career match wins.
Donald Oliver Young Jr. is an American professional pickleball player with the American League PPA and a former tennis player. Young had a career-high ATP singles ranking of No. 38, achieved on 27 February 2012, and doubles ranking of world No. 43, achieved on 14 August 2017. As a junior he was ranked No. 1 in the world in 2005.
Jürgen Melzer is an Austrian coach and former professional tennis player. Melzer reached a career-high singles ranking of world No. 8 in April 2011, and a doubles ranking of world No. 6 in September 2010. He has a younger brother, Gerald Melzer, with whom he played doubles in several tournaments.
Aisam-ul-Haq Qureshi is a Pakistani professional tennis player who specialises in doubles. He is the only Pakistani player ever to reach a Grand Slam final, having done so in both men's and mixed doubles at the 2010 US Open, alongside Rohan Bopanna and Květa Peschke respectively. Qureshi has also reached seven further major semifinals across the two disciplines. He reached his career-high doubles ranking of world No. 8 in June 2011, and has won 18 titles on the ATP Tour, including the 2011 Paris Masters and 2013 Miami Open, with Bopanna and Jean-Julien Rojer respectively. Qureshi has also qualified for the ATP Finals in doubles on three occasions.
Jamie Robert Murray, is a British professional tennis player from Scotland who specialises in doubles. He is a seven-time Grand Slam doubles champion, a Davis Cup winner, and a former doubles World No. 1.
Michael Craig Russell is an American former professional tennis player, and tennis coach. He reached a career-high singles ranking of World No. 60 in August 2007. His 23 United States Tennis Association (USTA) Pro Circuit singles titles were the all-time record, as of November 2013. That month he became the American No. 3.
Benjamin Nicholas Monroe is an American former professional tennis player. Monroe was a doubles specialist. He reached a career-high ATP doubles ranking of No. 30 on 2 October 2017 and won four ATP Tour doubles titles and thirteen ATP Challenger Tour titles in his career.
Samuel Groth OLY, MP is an Australian politician and a former professional tennis player. Sitting as a member of the Victorian Legislative Assembly, Groth represents the Liberal Party in the seat of Nepean. He is also the Shadow Minister for Youth and Shadow Minister for Tourism, Sport and Events since December 2022.
Martín Alund is a retired Argentine professional tennis player. He reached the semifinals of the 2013 Brasil Open; has won seven ATP Challenger events in doubles; and achieved a career-high singles ranking of World No. 84 in March 2013.
Jack Sock is an American pickleball player and former professional tennis player. He won four career singles titles and 17 doubles titles on the ATP Tour, and had career-high tennis rankings of world No. 8 in singles and world No. 2 in doubles.
Luke Saville is an Australian professional tennis player. He has had success as a doubles player where he reached his highest ranking of World No. 23 on 8 November 2021. Saville reached the final at the 2020 Australian Open, partnering with fellow Australian Max Purcell.
Jordan Thompson is an Australian professional tennis player, reaching a career-high ranking of world No. 30 in singles and of No. 13 in doubles, both achieved in August 2024. He has won one singles and six doubles ATP titles. He is currently the No. 3 Australian player in singles and No. 2 in doubles.
Alexei Popyrin is an Australian professional tennis player.l He has a career-high ATP singles ranking of world No. 23 achieved on 12 August 2024. He also has a career-high ATP doubles ranking of No. 235 achieved on 27 June 2022. He is currently the No. 2 Australian singles player. He has won three singles titles on the ATP Tour, including a Masters 1000 in Canada.
Rei Sakamoto defeated Jan Kumstát in the final, 3–6, 7–6(7–2), 7–5 to win the boys' singles tennis title at the 2024 Australian Open. He became the second player from Japan to win a boys' junior major title, after Shintaro Mochizuki at the 2019 Wimbledon Championships.
Cooper Woestendick is an American tennis player. He won the boys' doubles event at the 2024 Australian Open.
Max Schönhaus is a German professional tennis player. He became a junior Grand Slam champion in the Boys' doubles at the 2024 Wimbledon Championships.
Alexander Razeghi and Max Schönhaus won the boys' doubles title at the 2024 Wimbledon Championships, defeating Jan Klimas and Jan Kumstát in the final, 7–6(7–1), 6–4.
Maxim Mrva and Rei Sakamoto won the boys' doubles title at the 2024 US Open, defeating Denis Peták and Flynn Thomas in the final, 7–5, 7–6(7–1).
United States 
