WThe Malaysian Open was a professional men's tennis tournament played on indoor hard courts. It was part of the ATP World Tour 250 series of the Association of Tennis Professionals (ATP) World Tour. It was held annually in late September, early October at the Bukit Jalil Sports Complex in Kuala Lumpur, Malaysia. The inaugural edition took place from 28 September to 4 October 2009. In 2016 it was replaced on the ATP tour by the Chengdu Open.
WThe BNP Paribas Showdown was a one-night exhibition tennis event operated by GF Sports and held at Madison Square Garden in New York City each February or March since 2008.
WThe British Covered Court Championships (BCCC) was an indoor tennis event held from 1885 through 1971 and played in London, England. The dates of the tournament fluctuated between October and March.
WThe Danish Open was a professional women's tennis tournament played 2010–12 on indoor hard courts in Farum, Denmark north of Copenhagen. The event was affiliated with the Women's Tennis Association (WTA), and is an International-level tournament on the WTA Tour. The tournament may be viewed as a continuation of the ITF event 2008 Nordea Danish Open in Odense. A plan to change surface to red clay in 2012, still played indoors in Farum, was dropped due to the cost.
WThe Diamond Games was a professional women's tennis tournament organised in Antwerp, Belgium. The tournament took place in the Sportpaleis, at the beginning of February.
WThe Ethias Trophy is a professional tennis tournament played on indoor hard courts. It is currently part of the Association of Tennis Professionals (ATP) Challenger Tour. It has been held annually in Mons, Belgium, since 2005.
WThe MT:S Open powered by Sony Ericsson was a professional tennis tournament played on indoor hard courts. It was part of the Association of Tennis Professionals (ATP) Challenger Tour. It was held annually at the Tennis Club Gemax in Belgrade, Serbia, starting in 2002.
WThe Intersport Heilbronn Open is a defunct professional tennis tournament played on indoor hard courts. It has been part of the Association of Tennis Professionals (ATP) Challenger Tour until 2014. It was held annually in Talheim, Germany, since 1984.
WThe Kremlin Cup is a professional tennis tournament played on indoor hard courts. It is currently part of the ATP Tour 250 series of the ATP Tour and is 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 will undergo a major reconstruction which will last two years. The 2019 edition of the tournament will be held at the Ice Palace Krylatskoye.
WThe Laver Cup is an international indoor hard court men's tennis tournament between two teams: Team Europe and Team World, the latter of which is composed of players from non-European countries. Held annually, the tournament is intended to be the Ryder Cup of the tennis world. It takes place two weeks after the US Open, with the location rotating. In addition to the guaranteed participation fees which are based upon the players' ATP rankings, each member of the winning team gets $250,000 in prize money, but the tournament itself does not count towards the players' point totals in the ATP Tour for that year. In May 2019, the Laver Cup became an officially sanctioned ATP Tour event.
WThe Malaysian Open is a professional women's tennis tournament played on outdoor hard courts. The event is affiliated with the Women's Tennis Association (WTA), and is an International-level tournament on the WTA Tour. The event has been held at the Bukit Kiara Equestrian & Country Resort and The Royal Selangor Golf Club. The first edition of the event took place from February 22–28, 2010. In 2011 the event became sponsored by BMW.
WThe Open 13 is an annual men's tennis tournament played in Marseille, France. The tournament is an ATP World Tour 250 series event on the Association of Tennis Professionals tour. It is held for one week in February. The number 13 is the INSEE code of the Bouches-du-Rhône département of which Marseille is the capital.
WOpen GDF Suez, formerly Open Gaz de France, was a Premier level tennis tournament on the WTA Tour held in Paris, France. Held from 1993 till 2014, the tournament was played indoors, originally on carpet until 2000, then on hardcourts. The 2014 Open GDF Suez was the last edition.
WThe Open Sud de France is a professional tennis tournament played on indoor hard courts. It is currently part of the ATP Tour 250 series of the ATP Tour. It was held annually at the Palais des Sports de Gerland in Lyon, France, in October, from 1987 through to 2009, before being relocated to Montpellier in 2010. The tournament takes place at the Montpellier Arena, holding 7,500 spectators.
WThe Pacific Coast Championships was an annual men's tennis tournament. It was the second-oldest ongoing tennis tournament in the United States and ran from 1889 until 2013. Its final edition, known by its sponsored name SAP Open, was an ATP World Tour 250 series event on the Association of Tennis Professionals tour and played indoors on a hard surface at the SAP Center at San Jose.
WThe Paris Masters is an annual tennis tournament for male professional players held in Paris, France. It is played indoors at the AccorHotels Arena, in the neighborhood of Bercy. The event is part of the ATP Tour Masters 1000 on the Association of Tennis Professionals (ATP) Tour.
WThe PEOPLEnet Cup was a professional tennis tournament played on indoor hard courts. It was part of the Association of Tennis Professionals (ATP) Challenger Tour. It was held annually in Dnipropetrovsk, Ukraine, from 2003 till 2008.
WCurrent edition: 2020 St. Petersburg Open
WThe Peugeot Slovak Open is a professional tennis tournament played on indoor hard courts. It is currently part of the Tretorn SERIE+ of Association of Tennis Professionals (ATP) Challenger Tour and ITF Women's Circuit. It is held at the Národné Tenisové Centrum in Bratislava, Slovakia, since 2000.
WThe Stockholm Open is an indoor tennis event on the ATP Tour played at the Kungliga tennishallen in Stockholm, Sweden. The tournament is owned by The Royal Lawn Tennis Club of Stockholm, SALK and Tennis Stockholm.
WThe Volkswagen Challenger was a professional tennis tournament played on indoor carpet courts. It was part of the Association of Tennis Professionals (ATP) Challenger Tour. It was held annually at the Tennisclub Grün-Gold Wolfsburg in Wolfsburg, Germany, between 1993 and 2012.
WThe World Covered Court Championships were part of a series of three major world championships sanctioned from 1913–1923 by the International Lawn Tennis Federation (ILTF). The tournament was played indoors on wood floors, and its venue changed from year to year among several countries. While the World Grass Court Championships (Wimbledon) and World Hard Court Championships (WHCC) could justify their "world championship" titles, the WCCC had trouble attracting top players from outside Europe. At an Annual General Meeting (AGM) held on 16 March 1923 in Paris, France the ILTF issued the ‘Rules of Tennis’ that were adopted with public effect on 1 January 1924. USA became an affiliated member of the ILTF. The World Championship title was also dropped at this meeting and a new category of Official Championship was created for events in Great Britain, France, USA and Australia – today’s Grand Slam events. The WCCC tournament was then disbanded by the ILTF.
WThe Wrocław Open is a professional tennis tournament played on indoor hard courts. It is part of the Association of Tennis Professionals (ATP) Challenger Tour. It is held at the Hala Orbita in Wrocław, Poland.
WThe Zagreb Indoors was a men's tennis event on the ATP Tour held in the Croatian capital of Zagreb. From 2009-2015, it was a part of the ATP 250 Series and offered 250 ranking points. The tournament was played on a fast and hard indoor surface (RuKort) and featured both men's singles and men's doubles tournament.
WThe Zurich Open was a WTA Tour affiliated professional tennis tournament for women, formerly held every winter in Zürich, Switzerland. It was classified on the WTA Tour as a Tier I tournament from 1993 until 2007. In its final year, 2008, it was downgraded to a Tier II event.