Tennis is a racket sport that is played either individually against a single opponent (singles) or between two teams of two players each (doubles). Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court. The object of the game is to manoeuvre the ball in such a way that the opponent is not able to play a valid return. The player who is unable to return the ball validly will not gain a point, while the opposite player will.
Biberach is a Landkreis (district) in Baden-Württemberg, Germany. It is bounded by the districts of Ravensburg, Sigmaringen, Reutlingen and Alb-Donau, and the Bavarian districts Neu-Ulm, Unterallgäu and the district-free city Memmingen. The major towns in the district of Biberach are Biberach an der Riß, Riedlingen, Ochsenhausen and Laupheim.
Wheelchair tennis is one of the forms of tennis adapted for wheelchair users. The size of the court, net height and rackets are the same, but there are two major differences from pedestrian tennis: athletes use specially designed wheelchairs, and the ball may bounce up to two times, where the second bounce may also occur outside the court.
Biberach an der Riß, often referred to as simply Biberach, is a town in southern Germany. It is the capital of Biberach district, in the Upper Swabia region of the German state (Land) of Baden-Württemberg. It is called Biberach an der Riß after the small river Riß which flows through the city to distinguish it from the other towns of similar names.
The International Tennis Federation (ITF) is the governing body of world tennis, wheelchair tennis, and beach tennis. It was founded in 1913 as the International Lawn Tennis Federation by twelve national tennis associations. As of 2016, there are 211 national and six regional associations that make up the ITF's membership.
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 Grand Slam Cup was a tennis tournament held annually at the Olympiahalle in Munich, Germany from 1990 through 1999. The event was organized by the International Tennis Federation (ITF), which invited the best-performing players in the year's Grand Slam events to compete in the Grand Slam Cup.
The ATP Tour is a worldwide top-tier tennis tour for men organized by the Association of Tennis Professionals. 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.
Karolina Šprem Baghdatis is a former professional tennis player from Croatia. She won eleven titles, all at the ITF level. Her highest ranking is world No. 17, achieved in October 2004.
The ITF Men's World Tennis Tour is a series of professional tennis tournaments held around the world that are organized by the International Tennis Federation. The tour represents the lowest rung of the men's professional tennis ladder. ITF tournaments are incorporated into the ATP rankings, enabling young professionals to progress on to the ATP Challenger Tour and ultimately the full ATP Tour. Nearly every professional player has spent some time on the ITF Men's World Tennis Tour.
Johanna Larsson is a Swedish former tennis player. In her career, she won two singles and 14 doubles titles on the WTA Tour, with 13 singles and 17 doubles titles on the ITF Women's Circuit. Her career-high WTA rankings are 45 in singles, achieved in September 2016, and 20 in doubles, set on 30 October 2017.
Katie Jill O'Brien is a British former professional tennis player from Beverley, Yorkshire. She was briefly the British No. 1 tennis player, and reached her career-high singles ranking of world No. 84 on 1 February 2010. She won four singles and two doubles titles on the ITF Circuit.
Andrea Sestini Hlaváčková is a Czech retired professional tennis player.
The Open Medellín is a professional tennis tournament played on outdoor clay courts.
The Rijeka Open is a professional tennis tournament played on outdoor red clay courts. It was part of the Association of Tennis Professionals (ATP) Challenger Tour from 2007 to 2011 and was held in Rijeka, Croatia.
The ITF Women's Circuit is the second-tier tour for women's professional tennis organised by the International Tennis Federation, and is a tier below the WTA Tour. The ITF Women's Circuit includes tournaments with prize money ranging from $10,000 up to $100,000.
The ITF Junior Circuit is the premier level for worldwide competition among under-18 junior tennis players. Founded in 1977 with only nine tournaments, the 2011 ITF Junior Circuit offered over 350 tournaments in 118 countries. Mirroring the ATP and WTA circuits, the ITF Junior Circuit ranks players and crowns a year-end world champion.
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.
Jessika Ponchet is a French professional tennis player. She has career-high WTA rankings of 119 in singles, achieved on 8 May 2023, and 101 in doubles, achieved on 28 November 2022.
Johanna Larsson 
Romina Oprandi 
Karolina Šprem 
Kirsten Flipkens 
Yvonne Meusburger 
Martina Pavelec 
Lucie Hradecká 
Stéphanie Cohen-Aloro 
Selima Sfar 
Nina Bratchikova 
Urszula Radwańska 
Sandra Martinović