The Women's Tennis Association (WTA) is the principal organizing body of women's professional tennis. It governs the WTA Tour which is the worldwide professional tennis tour for women and was founded to create a better future for women's tennis. The WTA's corporate headquarters is in St. Petersburg, Florida, with its European headquarters in London and its Asia-Pacific headquarters in Beijing.
Sporting events called the European Open include:
The WTA Finals is a tournament of the Women's Tennis Association (WTA) played annually at the end of the season for the top-ranked professional players. The tournament predates WTA and started in 1972 as the Championship tournament of WTA Tour's predecessor: the Virginia Slims Circuit. Since 2003 there have been eight singles players divided into two round-robin groups, and eight doubles teams.
The 1985 Virginia Slims World Championship Series was the 15th season since the foundation of the Women's Tennis Association. It commenced in March 1985, and concluded in March 1986 after 52 events.
The 1977 Colgate-Palmolive Grand Prix was a professional tennis circuit administered by the International Lawn Tennis Federation which served as a forerunner to the current Association of Tennis Professionals (ATP) World Tour and the Women's Tennis Association (WTA) Tour. The circuit consisted of the four modern Grand Slam tournaments and open tournaments recognised by the ILTF. The Colgate-Palmolive Masters is included in this calendar but did not count towards the Grand Prix ranking. Colgate-Palmolive was the new tour sponsor, taking over from Commercial Union. Guillermo Vilas won the Grand Prix circuit, having accumulated the most points (2,047), and received the largest share from the bonus pool ($300,000). The top eight points ranked singles players as well as the top four doubles teams qualified for the season-ending Masters tournament
The 1986 Virginia Slims World Championship Series was the 14th season since the foundation of the Women's Tennis Association. It commenced on March 24, 1986, and concluded in December, 1986 after 41 events. The season was abbreviated in order to return the tour to a calendar year basis.
The 1987 Virginia Slims World Championship Series was the 15th season of the tennis circuit since the foundation of the Women's Tennis Association. It commenced in January, 1987, and concluded in December, 1987 after events.
The 1978 Virginia Slims Championships were the seventh WTA Tour Championships, the annual tennis tournament for the best female tennis players in singles on the 1978 WTA Tour. The singles event consisted of two round robin groups of four players each. The winners of each group played each other in the final and additionally there was a play-off match for third place. The tournament was held from March 29 to April 2, 1978, in the Oakland Coliseum Arena in Oakland, United States. First-seeded Martina Navratilova won the singles event and the accompanying $50,000 first prize money.
The 1979 Avon Championships were the eighth WTA Tour Championships, the annual tennis tournament for the best female tennis players in singles on the 1979 WTA Tour. It was held on indoor carpet courts from March 21 through March 25, 1979, in Madison Square Garden in New York City, United States.
The 1980 Avon Championships were the ninth WTA Tour Championships, the annual tennis tournament for the best female tennis players on the 1980 WTA Tour. It was held in the week of 17 March 1980, in Madison Square Garden in New York City, United States. Second-seeded Tracy Austin won the singles title and earner $100,000 first-prize money.
The 1977 Virginia Slims Championships were the sixth season-ending WTA Tour Championships, the annual tennis tournament for the best female tennis players in singles on the 1977 WTA Tour. The singles event consisted of two round robin groups of four players each. The winners of each group played each other in the final and additionally there was a play-off match for third place. The tournament was played on indoor carpet and was held from March 24 to 27 in Madison Square Garden in New York City. First-seeded Chris Evert won the singles event and the accompanying $50,000 first prize money.
The 2014 WTA Tour was the elite professional tennis circuit organized by the Women's Tennis Association (WTA) for the 2014 tennis season. The 2014 WTA Tour calendar comprises the Grand Slam tournaments, the WTA Premier tournaments, the WTA International tournaments, the Fed Cup, and the year-end championships. Also included in the 2014 calendar is the Hopman Cup, which was organized by the ITF and did not distribute ranking points.
The 1982 Avon Championships World Championship Series was the 10th season since the foundation of the Women's Tennis Association. It commenced on January 4, 1982, and concluded on December 19, 1982, after 36 events. The Avon Championships World Championship Series was the elite tour for professional women's tennis organised by the Women's Tennis Association (WTA). It was held in place of the WTA Tour from 1982 until 1987 and featured tournaments that had previously been part of the Toyota Series and the Avon Series. It included the four Grand Slam tournaments and a series of other events. ITF tournaments were not part of the tour, although they awarded points for the WTA World Ranking.
The 1981 Avon Championships World Championship Series was the 10th season since the foundation of the Women's Tennis Association. It commenced on January 4, 1981, and concluded on December 19, 1981, after 36 events. The Avon Championships World Championship Series was the elite tour for professional women's tennis organised by the Women's Tennis Association (WTA). The year is divided into two sponsors with the first three months sponsored by Avon Series and the latter part by Toyota Series. It included the four Grand Slam tournaments and a series of other events. ITF tournaments were not part of the tour, although they awarded points for the WTA World Ranking.
The 1980 Avon Championships World Championship Series was the 10th season since the foundation of the Women's Tennis Association. It commenced on January 7, 1980, and concluded on December 24, 1980, after 36 events. The Avon Championships World Championship Series was the elite tour for professional women's tennis organised by the Women's Tennis Association (WTA). The year is divided into two sponsored tours, with the first three months sponsored by Avon Series and the latter part by Colgate Series. It included the four Grand Slam tournaments and a series of other events. ITF tournaments were not part of the tour, although they awarded points for the WTA World Ranking.
The 1977 WTA Tour consisted of a number of tennis tournaments for female tennis players. It was composed of the newly streamlined version of the Virginia Slims Circuit and the Colgate Series. The year 1977 also saw the creation of the first official ranking system and these rankings were used to determine acceptance into the tournaments.
The 1978 WTA Tour consisted of a number of tennis tournaments for female tennis players. It was composed of the newly streamlined version of the Virginia Slims Circuit and the Colgate Series. The tour was administered by the Women's International Professional Tennis Council.
The 1979 WTA Tour consisted of a number of tennis tournaments for female tennis players. It was composed of the newly streamlined version of the Avon Championships and the Colgate Series. The year 1979 also saw the creation of the first official ranking system and these rankings were used to determine acceptance into the tournaments.
The 2015 WTA Tour was the elite professional tennis circuit organised by the Women's Tennis Association (WTA) for the 2015 tennis season. The 2015 WTA Tour calendar comprises the Grand Slam tournaments (supervised by the International Tennis Federation, the WTA Premier tournaments, the WTA International tournaments, the Fed Cup, and the year-end championships. Also included in the 2015 calendar is the Hopman Cup, which is organized by the ITF and does not distribute ranking points.
The 1979 WTA German Open was a women's tennis tournament played on outdoor clay courts at the Rot-Weiss Tennis Club in West Berlin, West Germany that was part of the 1979 Colgate Series and was held from 21 May through 27 May 1979. It was the 11th edition of the tournament and the first women's only edition. Caroline Stoll won the singles title and earned $20,000 first-prize money.
Chris Evert 
Françoise Dürr 
Virginia Wade 
Helen Gourlay Cawley 