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 Italian Open is an annual professional tennis tournament held in Rome, Italy. It is played on clay courts at the Foro Italico, and is held during the second week of May. The tournament is part of the ATP Masters 1000 events on the ATP Tour and part of the WTA 1000 events on the WTA Tour. The two events were combined in 2011.
The Hamburg Open is an annual tennis tournament for professional players held in Hamburg, Germany and part of the Association of Tennis Professionals (ATP) Tour. It is the 5th oldest tennis tournament in the world.
The Connecticut Open was a professional tennis tournament played on outdoor hard courts under various names and in various venues from 1948 until 2019.
The Kremlin Cup is a professional tennis tournament played on indoor hard courts, which was suspended in 2022. It was part of the ATP Tour 250 series of the ATP Tour and was a Premier Tournament on the WTA Tour. It was held annually at the Olympic Stadium in Moscow, Russia from 1990 to 2018. In 2019, the Olympic Stadium underwent a reconstruction lasting two years. The 2019 edition of the tournament was held at the Ice Palace Krylatskoye. In 2021, the Kremlin Cup was played at the Irina Viner-Usmanova Gymnastics Palace and the Luzhniki Palace of Sports.
The Tennis Channel Open its sponsored name was a men's hard court tennis tournament also known as the Las Vegas Open it was an ATP International Series event that was first founded as the WCT Scottsdale Open in 1986. That tournament by 2005 was officially known as the Scottsdale Open.
The Swiss Open Gstaad is a tennis tournament held in Gstaad, Switzerland. The tournament is played on outdoor clay courts. Between 1971 and 1989 it was an event of the Grand Prix tennis circuit and is now a part of the ATP Tour schedule as an ATP Tour 250 series event.
The ABN AMRO Open, also known as the Rotterdam Open, and formerly known as: ABN AMRO World Tennis Tournament, is a professional men's tennis tournament played on indoor hard courts. It is part of the ATP Tour 500 series on the ATP Tour and has been held annually at Rotterdam Ahoy in Rotterdam, Netherlands.
The Kingfisher Airlines Tennis Open was a professional men's tennis tournament played on outdoor hard courts. It was part of the International Series of the ATP Tour and was held annually in Asia.
The Stuttgart Open is an ATP Tour 250 series professional tennis tournament on the ATP Tour. From 1970 to 1989, the Stuttgart Open was a Grand Prix tennis circuit event. From 1990 to 1999, the Stuttgart Open was an ATP Championship Series tournament. The Championship Series name was changed to ATP International Series Gold in 2000, and the Stuttgart Open was a part of this series from 2000–2001 and 2003–2008. In 2002, the Stuttgart Open was briefly demoted for one year to ATP International Series status, which was renamed to the ATP Tour 250 in 2009, and it has retained the classification ever since.
The ATP International Series was a series of professional tennis tournaments held internationally as part of the ATP Tour from 2000 to 2008.
ATP International Series Gold was a series of professional tennis tournaments held internationally between 2000 and 2008 that were part of the ATP Tour. The tournaments were positioned below the ATP Masters Series, and above the ATP International Series in terms of prize money and ranking points available.
The Valencia Open, formerly known as Open de Tenis Comunidad Valenciana, was a professional men's tennis tournament played in Valencia, Spain. It was part of the Association of Tennis Professionals (ATP) Tour. The tournament was first played in Valencia in 1995 before moving to the Club de Tenis Puente Romano in Marbella for the 1996 and 1997 editions. From 1998 to 2002, the event was held in Mallorca, and finally, in 2003, moved back to its location in Valencia.
The Sydney International, formerly sponsored as the Apia International Sydney from 2012 to 2017, was a professional tennis tournament in Sydney, Australia. The tournament was played annually at the Sydney Olympic Park Tennis Centre in Sydney Olympic Park. It is one of the oldest tennis tournaments in the world, dating to 1885. In 2020 and 2021, the tournament was briefly replaced by the ATP Cup, before briefly returning in 2022 and has since been replaced in both men's and women's calendars by the United Cup.
The Milan Indoor, also known under various sponsored names, was a men's professional tennis tournament founded in 1973 as the ATP Milano Indoors an indoor carpet court event, that was the successor event the Milano International Indoors an indoor wood court tournament. In 1978 the event was revived as the Milan Indoor and held until 2005 when it was branded as the International of Lombardy or Internazionali di Lombardia. It took placed in Milan, Italy with the exception of three years (1998–2000) when it was held in London, United Kingdom. The event was part of the Grand Prix circuit (1981–89) and ATP Tour (1990–2005) and was played on indoor carpet courts, except for the 2000 edition which was played on an indoor hard court. The most successful singles players were John McEnroe and Boris Becker who both won four titles. Stefan Edberg and Roger Federer won the first singles title of their career at the event. A single female edition of the event was held in 1991, won by Monica Seles. Due to a lack of sponsorship the tournament was replaced on the 2006 ATP Tour by the Zagreb Indoors.
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 2008 Delray Beach International Tennis Championships was a men's tennis tournament played on outdoor hard courts. It was the 16th edition of the Delray Beach International Tennis Championships, and was part of the International Series of the 2008 ATP Tour. It took place at the Delray Beach Tennis Center in Delray Beach, Florida, United States, from February 11 through February 17, 2008.
The Brisbane International established in 2009 is a professional tennis tournament played on outdoor hardcourts in Brisbane, Queensland in Australia. It is a WTA 500 tournament and ATP 250 tournament.
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 tournament was not held from 2020 to 2022 due to Chinese travel restrictions related to the COVID-19 pandemic.
The 2006 Swedish Open was the 2006 edition of the men's tennis tournament. The tournament was held from 10–16 July. It was the 59th edition of the Swedish Open and was part of the International Series of the 2008 ATP Tour. Second-seeded Tommy Robredo won the singles title.
