Nicolás Alejandro Massú Fried, nicknamed El Vampiro, is a Chilean tennis coach and a former professional player. A former world No. 6 in singles, he won the singles and doubles gold medals at the 2004 Athens Olympics. He is the only man to have won both gold medals at the same Games since the re-introduction of Olympic tennis in 1988, and they were the first two Chile's Olympic gold medals. Massú also reached the final of the 2003 Madrid Masters and won six singles titles. He was the coach of 2020 US Open champion and former world No. 3 Dominic Thiem from 2019 to 2023.
Tennis Australia Limited is the governing body for tennis in Australia. It is owned by Australian states and territories. The association organizes national and international tennis tournaments including the Australian Open, Australian Open Series, Davis Cup, Billie Jean King Cup, ATP Cup, and Australian Pro Tour. In addition, the association takes the responsibility to facilitate tennis at all levels from grassroots to elite development. Tennis Australia's state-based member associates carry out the promotion, management, and development of tennis within Australia. Other than that, it administers amateur tournaments and youth development programs.
The Nottingham Open, originally known as the Nottingham Championships or Nottingham Lawn Tennis Tournament (1887–1967), is a tennis tournament for men and women held in Nottingham, United Kingdom, played on outdoor grass courts at the Nottingham Tennis Centre. After being discontinued in 2008, it was downgraded in 2011 to ATP Challenger Tour and ITF Women's Circuit, briefly re-established as an ATP World Tour 250 event on the men's tour in 2015 and 2016, before returning to a Challenger event in 2017, and since 2015 it has been an international event on the women's tour. The tournament is held in June as a "warm-up" for Wimbledon.
The Maccabi Men's Challenger was a professional tennis tournament played on outdoor hard courts. It was part of the ATP Challenger Tour. It was held at the Maccabi Tennis Club in Melbourne, Australia, in 2009.
Liam Tarquin Broady is a British professional tennis player who competes mainly on the ATP Challenger Tour. He reached a career high ranking of world No. 93 on 25 September 2023.
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.
James Duckworth is an Australian professional tennis player. He has a career-high ATP singles ranking of World No. 46 achieved on 31 January 2022 and No. 185 in doubles achieved on 10 February 2020. Duckworth represented Australia in tennis at the 2020 Tokyo Olympics and the 2022 ATP Cup.
Hiroki Moriya is a Japanese tennis player. He has won three ATP Challenger Tour singles titles and achieved a career-high singles ranking of world No. 143 on 5 January 2015.
Jarmere Jenkins is a retired American professional tennis player who became the hitting partner for Serena Williams. He was the 2013 Intercollegiate Tennis Association (ITA) National Player of the Year and male ACC Athlete of the Year after earning the national championships in indoor singles, outdoor doubles and team competition while also finishing runner up in outdoor singles. He was the first Atlantic Coast Conference athlete to win ACC athlete of the year solely for tennis accomplishments. In his first full year as a pro, he cracked the top 200 in the 2014 year end rankings at 193, but the costs of travel became prohibitive for him and he retired in 2017.
Alex Bolt is an Australian professional tennis player. He plays mainly on the ATP Challenger Tour. His career-high rankings by the ATP are world No. 125 in singles and world No. 81 in doubles. Highlights of his career include quarterfinal appearances at the 2014 Australian Open men's doubles and at the 2017 Australian Open with Andrew Whittington and Bradley Mousley respectively.
Andrew Whittington is a former Australian professional tennis player. He made the world's top 200 in August 2016 following a semifinal run at the 2016 Kentucky Bank Tennis Championships. His best performance came by reaching the quarterfinals of the 2014 Australian Open with Alex Bolt. In May 2014, Whittington and Bolt won the China International Challenger, which was both players' first Challenger doubles title. He made his singles grand slam debut at the 2017 Australian Open after being given a wildcard.
Chung Hyeon is a South Korean professional tennis player. He is the 2017 Next Gen Finals champion. As an unseeded player, he became the first Korean player to reach a Grand Slam semifinal at the 2018 Australian Open.
Omar Jasika is an Australian professional tennis player. Jasika has a career-high singles ranking of World No. 204 achieved on 6 May 2024 and a career-high doubles ranking of World No. 220 achieved on 23 May 2016.
The 2015 City of Onkaparinga ATP Challenger was a professional tennis tournament played on hard courts. It was the first edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Happy Valley, Australia between 3–11 January 2015.
Marc David Polmans is a South African-born Australian professional tennis player. Polmans has a career high ATP singles ranking of World No. 116 achieved on 12 October 2020. He also has a career high ATP doubles ranking of World No. 68 achieved on 16 October 2017. He won the 2015 Australian Open boys' doubles title with fellow Australian Jake Delaney, defeating Hubert Hurkacz and Alex Molčan in the final. He reached the semifinal of the 2017 Australian Open doubles with Andrew Whittington.
The 2016 City of Onkaparinga ATP Challenger was a professional tennis tournament played on hard courts. It was the second edition of the tournament which was part of the 2016 ATP Challenger Tour. It took place in Happy Valley, South Australia, Australia between 2–10 January 2016.
Oliver Anderson is an Australian professional tennis player. Anderson was convicted and temporarily suspended from playing professional tennis due to being found guilty of match fixing his first round match at the 2016 Latrobe City Traralgon ATP Challenger.
Blake Mott is an Australian professional tennis player. He competes mainly in the Challenger Tour. He reached his career high singles ranking of World No. 220 in June 2017. He won his first Challenger title in the 2016 Launceston Tennis International and made his Grand Slam debut at the 2017 Australian Open after qualifying.
Max Purcell is an Australian professional tennis player. He reached his career-high singles ranking of world No. 40 on 16 October 2023 and a doubles ranking of No. 8 on 9 September 2024.
The 2017 City of Onkaparinga ATP Challenger was a professional tennis tournament played on hard courts. It was the third edition of the tournament and part of the 2017 ATP Challenger Tour. It took place in Happy Valley, Australia from 2 to 8 January 2017.
2016 City of Onkaparinga ATP Challenger 
