The Association of Tennis Professionals (ATP) is the governing body of the men's professional tennis circuits – the ATP Tour, the ATP Challenger Tour and the ATP Champions Tour. It was formed in September 1972 by Donald Dell, Jack Kramer, and Cliff Drysdale to protect the interests of professional tennis players, and Drysdale became the first president. Since 1990 the association has organized the ATP Tour, the worldwide tennis tour for men and linked the title of the tour with the organization's name. It is the governing body of men's professional tennis. In 1990 the organization was called the ATP Tour, which was renamed in 2001 as just ATP and the tour being called ATP Tour. In 2009 the name of the tour was changed again and was known as the ATP World Tour, but changed again to the ATP Tour by 2019. It is an evolution of the tour competitions previously known as Grand Prix tennis tournaments and World Championship Tennis (WCT). The ATP's global headquarters are in London. ATP Americas is based in Ponte Vedra Beach, Florida; ATP Europe is headquartered in Monaco; and ATP International, which covers Africa, Asia and Australasia, is based in Sydney, Australia.
The ATP Challenger Tour, known until the end of 2008 as the ATP Challenger Series, is a series of international men's professional tennis tournaments. The Challenger Tour events are the second-highest tier of tennis competition, behind the ATP Tour. The ITF World Tennis Tour tournaments are on the entry-level of international professional tennis competition. The ATP Challenger Tour is administered by the Association of Tennis Professionals. Players who succeed on the ATP Challenger Tour earn sufficient ranking points to become eligible for main draw or qualifying draw entry at ATP Tour tournaments. Players on the Challenger Tour are usually young players looking to advance their careers, those who fail to qualify for ATP events, or former ATP players looking to get back into the big tour.
The Chile Open is a professional men's tennis tournament played on outdoor red clay courts in Santiago, Chile. The tournament was originally founded as the Chile International Championships in 1930 as a combined men's and women's tennis event. In its history it was held alternately in Viña del Mar city and in 2010, Colina. It is part of the ATP Tour 250 of the Association of Tennis Professionals (ATP) Tour and part of the four-tournament Golden Swing.
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 Hong Kong Open is a professional tennis tournament in Hong Kong SAR. Organised by the Hong Kong, China Tennis Association, the women's tournament is held annually during the Asian swing in early October in Victoria Park, Causeway Bay as a WTA 250 tournament; the men's tournament is held annually as a lead-up tournament to the Australian Open in early January as an ATP 250 tournament.
The Tel Aviv Open is an ATP Tour-affiliated tennis tournament. It was first played from 1978 through 1999 and was to be resumed in 2014 as a replacement for the St. Petersburg Open, however its return was cancelled due to security concerns arising from the 2014 Gaza War and scrapped permanently in 2015. On June 21, 2022, it was announced that the tournament would return later that year, albeit in a different venue than previous editions. The tournament was planned to continue in 2023, but was cancelled due to the Israel–Hamas war.
The Shanghai Masters is an annual tennis tournament for male professional players held in Shanghai, China. It is played on outdoor hard courts at the Qizhong Forest Sports City Arena in the Minhang District, and is held in early October. The tournament is part of the nine ATP Tour Masters 1000 events on the ATP Tour, and is the only one not played in Europe or North America.
The Kunming Open is a tennis tournament held in Anning, China since 2012. The women's event first started in 2014, joining the men's Challenger. The event is currently part of the ITF Men's World Tennis Tour and ITF Women's World Tennis Tour and is played on clay courts.
The Australian Open Series is a selection of tennis tournaments held annually prior to the start of the Australian Open in Melbourne. In 2023, there are five official Australian Open Series tournaments held across Australia in preparation for the first Grand Slam of the year, as designated by Tennis Australia.
The 2013 ATP Challenger Tour Finals is a tennis tournament played at the Sociedade Harmonia de Tênis in São Paulo, Brazil, between 13 and 17 November 2013. It will be the third edition of the event.
The Rio Open, also known as the Rio Open presented by Claro for sponsorship reasons, is a tennis event on the ATP Tour and former WTA International Tournaments event. The tournament is played on outdoor clay courts at the Jockey Club Brasileiro in Rio de Janeiro, Brazil. It is the only ATP Tour 500 event in South America and the only ATP Tour event in Brazil.
Laslo Djere is a Serbian professional tennis player. On 10 June 2019, Djere reached his career-high singles ranking of world No. 27. On 22 March 2021, he reached his career-high at world No. 346 in the doubles rankings. He is currently the No. 2 Serbian player.
The Mallorca Championships is a professional tennis tournament on the ATP Tour. Classified as an ATP 250 tournament, the event is annually held at the outdoor grass courts of Mallorca Country Club in Santa Ponsa, Mallorca, Spain in June, a week prior to Wimbledon Championships.
The Next Generation ATP Finals is an annual men's professional exhibition tennis tournament organized by the Association of Tennis Professionals (ATP) for the best players of the season aged 20 years old or younger. The event debuted in 2017 at the PalaLido in Milan, where it was also staged for the next four editions, before it was moved to King Abdullah Sports City in Jeddah, beginning in 2023. From 2017 to 2023 the age threshold was 21 years and under.
Andrea Vavassori is an Italian professional tennis player. He has a career high ATP singles ranking of world No. 128, achieved on 19 June 2023. He also has a career high doubles ranking of world No. 23, achieved on 19 February 2024. Vavassori has won four ATP Tour and 16 ATP Challenger doubles titles.
The 2020 ATP Cup was the first edition of the ATP Cup, an international outdoor hard court men's team tennis tournament held by the Association of Tennis Professionals (ATP). Serving as the opener for the 2020 ATP Tour, it was the first ATP team tournament since the last edition of the World Team Cup in 2012. It was held on 3–12 January 2020 at three venues in the Australian cities of Brisbane, Perth, and Sydney.
The ATP Challenger Tour in 2020 was the secondary professional tennis circuit organized by the ATP. The 2020 ATP Challenger Tour calendar comprised 57 tournaments with prize money ranging from $35,000 up to $162,480. It was the 43rd edition of challenger tournaments cycle and 12th under the name of Challenger Tour.
The 2020 BNP Paribas Open was a professional men and women's tennis tournament to be played in Indian Wells, California. The event was initially scheduled to take place on March 11–22, 2020, but was canceled due to the COVID-19 pandemic.
Giulio Zeppieri is an Italian professional tennis player.
The 2021 Sardegna Open was a tennis tournament on the 2021 ATP Tour. It was played on outdoor clay courts in Cagliari, Sardinia, Italy. It was organised with a single-year licence in 2021, and was held at Tennis Club Cagliari from April 5 to 11, 2021.
2024 Sardegna Open 
