The Women's Tennis Association (WTA), founded in 1973 by Billie Jean King, is the principal organizing body of Women's Professional Tennis. It governs the WTA Tour which is the worldwide professional tennis tour for women. Its counterpart organization in the men's professional game is the Association of Tennis Professionals (ATP). Jerry Diamond of San Francisco became Executive Director of the WTA in 1974 and remained until 1985. He is considered the creator the Women's Point System for ranking players.

The Women's Tennis Association can trace its origins back to Houston, Texas with the inaugural Virginia Slims tournament, arranged by Gladys Heldman, and held on 23 September 1970. Rosie Casals won this first event. The WTA's corporate headquarters is in St. Petersburg, Florida. The European headquarters is in London, and the Asia-Pacific headquarters is in Beijing.

The Open Era began in 1968. The first open tournament was the British Hard Court Championships in Bournemouth. At the first Open Wimbledon the prize fund difference was 2.5:1 in favour of men. Billie Jean King won £750 for taking the title while Rod Laver won £2,000. The total purses of both competitions were 14,800 for men and 5,680 for women. Confusion also reigned as no one knew how many open tournaments there were supposed to be. The tournaments who did not want to provide prize money eventually faded out of the calendar, including the Eastern Grass Court circuit with stops at Merion Cricket Club and Essex county club.

Venus Ebony Starr Williams (born June 17, 1980), is an American professional tennis player who is a former World No. 1 and is ranked World No. 53 as of May 28, 2012 in singles. She has been ranked World No. 1 in singles by the Women's Tennis Association on three separate occasions. She became the World No. 1 for the first time on February 25, 2002, becoming the first black woman to achieve this feat during the Open Era.

Her 21 Grand Slam titles ties her for twelfth on the all time list and is more than any other active female player except for her younger sister Serena Williams. Venus Williams' titles consist of: seven in singles, twelve in women's doubles, and two in mixed doubles. Those seven Grand Slam singles titles ties her with four other women for twelfth place on the all-time list. Her five Wimbledon singles titles ties her with two other women for eighth place on the all-time list. Venus Williams is one of only three women in the open era to have won five or more Wimbledon singles titles. From the 2000 Wimbledon Championships through the 2001 US Open, Williams won four of the six Grand Slam singles tournaments held. She is one of only five women in the open era to win 200 or more main draw Grand Slam singles matches.

Maria Yuryevna Sharapova (Russian: Мария Юрьевна Шарапова [mɐˈrʲijə ˈjurʲjɪvnə ʂɐˈrapəvə] ( listen), US: /ʃɑrəˈpoʊvə/, UK: /ʃærəˈpoʊvə/; born April 19, 1987) is a Russian professional tennis player and former world no. 1. A United States resident since 1994, Sharapova has won 26 WTA singles titles, including three Grand Slam singles titles at the 2004 Wimbledon, 2006 US Open and 2008 Australian Open. She has also won the year-end WTA Tour Championships in 2004. The Women's Tennis Association has ranked Sharapova world no. 1 in singles on four separate occasions. She became the world no. 1 for the first time on August 22, 2005, and last regained the ranking for the fourth time on May 19, 2008. As of May 28, 2012, Sharapova is ranked world no. 2. She has been in six Grand Slam finals with the final record 3–3.

Sharapova made her professional breakthrough in 2004 at age 17, when she defeated two-time defending champion and top seed Serena Williams in the 2004 Wimbledon final for her first Grand Slam singles title. She entered the top 10 of the WTA Rankings with the win. Despite not winning a major in 2005, Sharapova briefly held the no. 1 ranking, and reached three Grand Slam semifinals, losing to the eventual champion each time. She won her second major at the 2006 US Open defeating then-world no. 1 Amélie Mauresmo in the semifinals and world no. 2 Justine Henin in the final.

Victoria Azarenka (Belarusian: Вікторыя Фёдараўна Азаранка, Russian: Виктория Фёдоровна Азаренко; born 31 July 1989) is a Belarusian professional tennis player. She is the current World No. 1 as of 28 May 2012.

She won the 2012 Australian Open singles title, becoming the first Belarusian player to win a Grand Slam in singles. Her other achievements include winning two mixed doubles Grand Slam titles, the 2007 US Open with Max Mirnyi and the 2008 French Open with Bob Bryan.

At age 16, Azarenka moved to Scottsdale, Arizona from Minsk, Belarus, to train. In this she was aided by National Hockey League goalie Nikolai Khabibulin and his wife, who is a friend of Azarenka's mother. In 2010 she briefly considered a break from the sport of tennis to focus on education, however, after a conversation with her grandmother she decided to continue playing. It is the inspiration from her grandmother that is regarded as the key for her continued developments in the sport. Azarenka is romantically involved with tennis player Sergei Bubka Jr, son of former Olympic gold medalist and World Champion, Sergey Bubka.