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.
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.
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 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.
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.
The ITF 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.
Arantxa Rus is a Dutch tennis player. In 2008, she won the girl's singles title at the Australian Open, defeating Jessica Moore from Australia in the final. With this win she went from 35th to second place on the junior rankings, ultimately becoming the world No. 1 junior 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 is currently part of the Association of Tennis Professionals (ATP) Challenger Tour. It is held annually in Rijeka, Croatia, since 2007.
Aleksandra Krunić is a Serbian professional tennis player. She has won one singles title and six doubles titles on the WTA Tour along with one singles title on WTA 125 tournaments. In June 2018, she reached her best singles rankings of world No. 39. On 30 September 2019, she peaked at No. 35 in the doubles rankings. She is currently the Serbian No. 1 female player.
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.
The Siberia Cup was a professional tennis tournament played on indoor hard courts. The event was part of the ATP Challenger Tour and the ITF Women's Circuit. It was classified as a 50K ITF Women's Circuit Tournament. It was held in Tyumen, Russia, from 2011 to 2013.
The Open Era is the current era of professional tennis. It began in 1968 when the Grand Slam tournaments allowed professional players to compete with amateurs, ending the division that had persisted since the dawn of the sport in the 19th century. The first open tournament was the 1968 British Hard Court Championships held in April, followed by the inaugural open Grand Slam tournament, the 1968 French Open, a month later. Unless otherwise sourced, all records are based on data from the Association of Tennis Professionals (ATP), the International Tennis Federation (ITF), and the official websites of the four Grand Slam tournaments. All rankings-related records are based on ATP rankings, which began in 1973. The names of active players appear in boldface.
Makoto Ninomiya is a Japanese professional tennis player.
Quentin Halys is a French professional tennis player. Halys has a career-high ATP singles ranking of world No. 74 attained on 25 July 2022. He has won five singles titles on the ATP Challenger Tour and seven in doubles.
The 2022 WTA Tour is the global elite women's professional tennis circuit organized by the Women's Tennis Association (WTA) for the 2022 tennis season. The 2022 WTA Tour calendar comprises the Grand Slam tournaments, the WTA 1000 tournaments, the WTA 500 tournaments, the WTA 250 tournaments, the Billie Jean King Cup, and the year-end championships.
The 2022 International Tennis Federation (ITF) Women's World Tennis Tour is the entry-level and mid-level tour for women's professional tennis. It is organized by the International Tennis Federation and is a tier below the Women's Tennis Association (WTA) Tour. The ITF Women's World Tennis Tour provides a professional pathway between the ITF Junior World Tennis Tour and the WTA Tour. The results of ITF tournaments are incorporated into the WTA ranking, which enables professionals to progress through to the elite levels of women's professional tennis. The ITF Women's World Tennis Tour offers approximately 500 tournaments across 65 countries and incorporates five prize money levels of tournaments: $15,000, $25,000, $60,000, $80,000 and $100,000
2012 Colorado International 
