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.
Table tennis is a racket sport derived from tennis but distinguished by its playing surface being atop a stationary table, rather than the court on which players stand. Either individually or in teams of two, players take alternating turns returning a light, hollow ball over the table's net onto the opposing half of the court using small rackets until they fail to do so, which results in a point for the opponent. Play is fast, requiring quick reaction and constant attention, and is characterized by an emphasis on spin, which can affect the ball's trajectory more than in other ball sports.
The US Open Tennis Championships, commonly called the US Open, is a hardcourt tennis tournament organized by the United States Tennis Association annually in Queens, New York City. It is chronologically the fourth and final of the four Grand Slam tennis events, held after the Australian Open, French Open, and Wimbledon.
The Australian Open is a tennis tournament organized by Tennis Australia annually at Melbourne Park in Melbourne, Victoria, Australia. It is chronologically the first of the four Grand Slam tennis events every year, held before the French Open, Wimbledon and the US Open.
Billie Jean King, also known as BJK, is an American former world No. 1 tennis player. King won 39 Grand Slam titles: 12 in singles, 16 in women's doubles, and 11 in mixed doubles. King was a member of the victorious United States team in seven Federation Cups and nine Wightman Cups. For three years, she was the U.S. captain in the Federation Cup.
Serena Jameka Williams is an American former professional tennis player. Widely regarded as one of the greatest tennis players of all time, she was ranked world No. 1 in singles by the Women's Tennis Association (WTA) for 319 weeks, including a joint-record 186 consecutive weeks, and finished as the year-end No. 1 five times. She won 23 Grand Slam women's singles titles, the most in the Open Era, and the second-most of all time. She is the only player to accomplish a Career Golden Slam in both singles and doubles.
The Grand Slam in tennis is the achievement of winning all four major championships in one discipline in a calendar year. In doubles, a Grand Slam may be achieved as a team or as an individual with different partners. Winning all four major championships consecutively but not within the same calendar year is referred to as a "non-calendar-year Grand Slam", while winning the four majors at any point during the course of a career is known as a "Career Grand Slam".
Christine Marie Evert, known as Chris Evert Lloyd from 1979 to 1987, is an American former world No. 1 tennis player. Widely considered among the greatest tennis players of all time, Evert won 18 major singles titles, including a record seven French Open titles and a joint-record six US Open titles. Evert was ranked world No. 1 for 260 weeks, and was the year-end world No. 1 singles player seven times. Alongside Martina Navratilova, her greatest rival, Evert dominated women's tennis for much of the 1970s and 1980s.
Roger Federer is a Swiss former professional tennis player. He was ranked world No. 1 in singles by the Association of Tennis Professionals (ATP) for 310 weeks, including a record 237 consecutive weeks, and finished as the year-end No. 1 five times. He won 103 singles titles on the ATP Tour, the second most of all time, including 20 major men's singles titles and six year-end championships.
Arthur Robert Ashe Jr. was an American professional tennis player. He won three Grand Slam titles in singles and two in doubles. Ashe was the first black player selected to the United States Davis Cup team, and the only black man ever to win the singles titles at Wimbledon, the US Open, and the Australian Open. He retired in 1980.
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 ATP Finals is the season-ending championship of the ATP Tour. It is the most significant tennis event in the men's annual calendar after the four majors, as it features the top eight singles players and top eight doubles teams based on their results throughout the season. The eighth spot is reserved, if needed, for a player or team who won a major in the current year and is ranked from ninth to twentieth.
Rafael Nadal Parera is a Spanish professional tennis player. He was ranked world No. 1 in singles by the Association of Tennis Professionals (ATP) for 209 weeks, and finished as the year-end No. 1 five times. Nadal won 22 Grand Slam men's singles titles, including a record 14 French Open titles. He won 92 ATP-level singles titles, including 36 Masters titles and an Olympic gold medal, with 63 of these on clay courts. Nadal is one of three men to complete the career Golden Slam in singles. His 81 consecutive wins on clay constitute the longest single-surface win streak in the Open Era.
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.
This page is a glossary of tennis terminology.
The racket sport traditionally named lawn tennis, invented in Edgbaston, Warwickshire, England, now commonly known simply as tennis, is the direct descendant of what is now denoted real tennis or royal tennis, which continues to be played today as a separate sport with more complex rules.
Barbora Krejčíková is a Czech professional tennis player. She has a career-high singles ranking of world No. 2, achieved on 28 February 2022, and became World No. 1 in doubles on 22 October 2018. She is known for her aggressive playing style and her smooth, powerful groundstrokes.
Taylor Harry Fritz is an American professional tennis player. He has a career-high singles ranking of world No. 4 by the ATP, achieved on 18 November 2024, and a doubles ranking of No. 104, achieved on 26 July 2021. Fritz has won eight ATP Tour singles titles, including a Masters 1000 title in Indian Wells. His best results are reaching the Grand Slam final at the 2024 US Open and the final of the 2024 ATP Finals. He is the No. 1 American singles player.
Aryna Siarhiejeŭna Sabalenka is a Belarusian professional tennis player. She is the current world No. 1 in singles and former world No. 1 in doubles. Sabalenka has won three major singles titles at the 2023 and 2024 Australian Opens and the 2024 US Open, and two major doubles titles, at the 2019 US Open and the 2021 Australian Open, both partnering with Elise Mertens. She has won 23 career titles, 17 in singles and 6 in doubles.
2016 Vivo Tennis Cup 
