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 strung with a cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court. The object is to manoeuvre the ball in such a way that the opponent is not able to play a valid return. If a player is unable to return the ball successfully, the opponent scores a point.
A tennis court is the venue where the sport of tennis is played. It is a firm rectangular surface with a low net stretched across the centre. The same surface can be used to play both doubles and singles matches. A variety of surfaces can be used to create a tennis court, each with its own characteristics which affect the playing style of the game.
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 the ITF's membership.
The Billie Jean King Cup is the premier international team competition in women's tennis, launched as the Federation Cup in 1963 to celebrate the 50th anniversary of the International Tennis Federation (ITF). The name was changed to the Fed Cup in 1995, and changed again in September 2020 in honor of former World No. 1 Billie Jean King. The Billie Jean King Cup is the world's largest annual women's international team sports competition in terms of the number of nations that compete. The current chair is Katrina Adams.
Liuzhou is a prefecture-level city in north-central Guangxi Zhuang Autonomous Region, People's Republic of China. The prefecture's population was 4,153,500 as of 2023 census, including 2,519,051 in the built-up area made of five urban districts. Its total area is 18,594 km2 (7,179 sq mi) and 3,559.4 km2 (1,374.3 sq mi) for the built-up area.
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 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 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 male player has spent some time on the ITF Men's World Tennis Tour.
Esther Mary Vergeer is a Dutch former professional wheelchair tennis player. Vergeer won 43 major titles, 23 year-end championships, and seven Paralympic gold medals. She was the world No. 1 in women's wheelchair singles from 1999 to her retirement in February 2013. Vergeer went undefeated in singles for ten straight years, ending her career on a winning streak of 470 matches. She has often been named the most dominant player in professional sports.
Beach tennis is a game combining elements of tennis and volleyball and played on a beach.
Shingo Kunieda is a Japanese former wheelchair tennis player. With four Paralympic gold medals, 28 major singles titles – an all-time record in singles of any tennis discipline – and 50 major titles overall, Kunieda is widely considered the greatest male wheelchair player of all time.
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.
Aniek van Koot is a Dutch wheelchair tennis player who is a former world No. 1 in both singles and doubles.
Nina Stojanović is a Serbian professional tennis player. On 2 March 2020, Stojanović reached a career-high singles ranking of world No. 81. On 17 January 2022, she peaked at No. 37 in the WTA doubles rankings.
The 2016 Bank of Liuzhou Cup was a professional tennis tournament played on outdoor hard courts. It was the first edition of the tournament and part of the 2016 ITF Women's Circuit, offering a total of $50,000 in prize money. It took place in Liuzhou, China, on 24–30 October 2016.
The 2017 Bank of Liuzhou Cup was a professional tennis tournament played on outdoor hard courts. It was the second edition of the tournament and was part of the 2017 ITF Women's Circuit. It took place in Liuzhou, China, on 23–29 October 2017.
The 2018 Liuzhou International Challenger was a professional tennis tournament played on hard courts. It was the first edition of the tournament for men and third edition for women. It was the part of the 2018 ATP Challenger Tour and 2018 ITF Women's Circuit. It took place in Liuzhou, China between 22 and 28 October 2018.
The 2019 Liuzhou Open was a professional tennis tournament played on hard courts. It was the second edition of the tournament for men and fourth edition for women. It was the part of the 2019 ATP Challenger Tour and 2019 ITF Women's World Tennis Tour. It took place in Liuzhou, China between 21 October and 3 November 2019.
Gong Maoxin and Zhang Ze were the defending champions but chose not to defend their title.
2019 Liuzhou Open 
