The ATP Tour is the sole worldwide top-tier tennis tour for men organized by the Association of Tennis Professionals founded in 1990 that replaced the earlier dual Grand Prix Circuit and WCT Circuit. The second-tier tour is the ATP Challenger Tour and the third-tier is the ITF Men's World Tennis Tour. The equivalent women's organisation is the WTA Tour.
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 Surbiton Trophy is a tennis tournament for male and female professional players played on grass courts. The event was held annually in Surbiton, England, from 1997 through 2008 as part of the ATP Challenger Series and ITF Women's Circuit. In 2009, it was replaced by the Aegon Trophy in Nottingham. In 2015, the event resumed on both the ATP Challenger Tour and ITF Women's Circuit. It was the successor tournament to the Surrey Championships (1890–1981) also played at the same venue and location.
The Manchester Trophy was a professional tennis tournament played on outdoor grass courts. It was previously part of the ATP Challenger Tour and now currently part of the ITF Women's Circuit. It is held annually at the Northern Lawn Tennis Club in the Didsbury suburb of Manchester, England since 1995. The original defunct tournament, the Manchester Open, began in 1880 as the prestigious Northern Championships and continued until the event became a lower level Challenger tournament in 1995. The Challenger event ended in 2009, but was revived in 2015. The men's tournament was discontinued after the 2016 edition while the women's tournament was established in 2017 and ended in 2019.
The Lexington Challenger is a professional tennis tournament played on outdoor hardcourts. It is currently part of the ATP Challenger Tour and the ITF Women's World Tennis Tour, and has been held annually at the Hilary J. Boone Tennis Complex in Lexington, Kentucky, since 1995 for men and since 1997 for women.
The Nottingham Trophy was an annual tennis tournament played in Nottingham, England. The tournament was part of the ATP Challenger Tour and the International Tennis Federation as a $75,000 event. The tournament's key sponsor was Dutch insurance firm Aegon. The tournament was held at the end of May before the main tour's grass-court season starts.
The Shimadzu All Japan Indoor Tennis Championships is a professional tennis tournament played on indoor carpet courts founded as the All Japan Indoors in 1964. It is currently part of the International Tennis Federation (ITF) ITF Women's World Tennis Tour. From 1997 to 2018, it was part of the Association of Tennis Professionals (ATP) Challenger Tour. It is held annually in Kyoto, Japan, since 1997.
The Burnie International is a professional tennis tournament played on outdoor hardcourts. It is currently part of the ATP Challenger Tour and the ITF Women's Circuit. It is a $75k level tournament for the Challenger Tour and a $60,000 level tournament for the Women's Circuit, although it was previously a $25k level tournament before it was upgraded in 2014. It was held annually in Burnie between 2003 and 2015, but didn't take place in 2016 due to a need for court upgrades.
The Abierto de Puebla is a professional tennis tournament played on hard courts. It is currently part of the ATP Challenger Tour and the International Tennis Federation (ITF) Women's Circuit. It was held annually in Puebla, Mexico, from 1996 to 2009. The tournament was reinstated in 2016.
The Caversham International Tennis Tournament was a professional tennis tournament played on carpet. It was a part of the ATP Challenger Tour. It was held in Jersey, Channel Islands, from 2008 to 2009.
The ITF Women's World Tennis Tour, previously known as the ITF Women's Circuit, is a series of professional tennis tournaments run by the International Tennis Federation for female professional tennis players.
The Beijing International Challenger was a tennis tournament held in Beijing, China, from 2010 to 2013. The event was part of the ATP Challenger Tour and the ITF Women's Circuit and was played on outdoor hard courts. It was also part of the China Open Series.
The TEAN International was a professional tennis tournament played on outdoor clay courts. It was part of the Association of Tennis Professionals (ATP) Challenger Tour and the ITF Women's Circuit, held annually at the Alphense Tennis Club in Alphen aan den Rijn, Netherlands from 1996 to 2017.
The Bendigo International is a professional tennis tournament played on outdoor hardcourts. It is currently part of the ATP Challenger Tour and the ITF Women's World Tennis Tour, and held annually in Bendigo, Australia, since 2009.
The Tianjin Health Industry Park is a professional tennis tournament played on outdoor hardcourts. It is currently part of the ITF Women's Circuit. It was previously part of the ATP Challenger Tour in 2014. It has been held annually in Tianjin, China since 2014.
The Traralgon International is a professional tennis tournament played on outdoor hardcourts. It is part of the ATP Challenger Tour and the ITF Women's World Tennis Tour. It is held annually in Traralgon, Victoria in Australia since 2006.
The Morelos Open is a professional tennis tournament played on outdoor hard courts. It is currently part of the ATP Challenger Tour and the International Tennis Federation (ITF) Women's Circuit. It is held annually in Cuernavaca, Mexico.
The Stockton Challenger is a professional tennis tournament played on hard courts. It is currently part of the ATP Challenger Tour and the International Tennis Federation (ITF) Women's Circuit. It has been held annually in Stockton, California, United States since 2015.
The Liuzhou Open is a professional tennis tournament played on hard courts. It is currently part of the ATP Challenger Tour and the International Tennis Federation (ITF) Women's Circuit. It has been held annually in Liuzhou, China since 2016.
The City of Playford Tennis International is a professional tennis tournament played on outdoor hard courts. It is currently part of the ATP Challenger Tour and the International Tennis Federation (ITF) Women's Circuit. It is held annually at the Playford City Tennis Centre in Playford, Australia, since 2018. The men's event replaces the City of Onkaparinga ATP Challenger held from 2015 until 2017.
