Jana Čepelová (born 29 May 1993 in Košice) is a professional Slovak tennis player. Her highest WTA singles ranking is world no. 180, which she reached on 14 May 2012. Čepelová's best tennis achievement to date is by winning the girls doubles event at the 2010 Australian Open partnering Chantal Škamlová. They beat Tímea Babos and Gabriela Dabrowski in the final with a score of 7–6(1), 6–2.

Čepelová was born to Peter and Jarmila. She is currently coached by Peter Huber.

Serena Jameka Williams (born September 26, 1981) is an American professional tennis player and a former world no. 1. The Women's Tennis Association has ranked her world no. 1 in singles on five separate occasions. She became the world no. 1 for the first time on July 8, 2002 and regained this ranking for the fifth time on November 2, 2009. She is the only female player to have won over $35 million in prize money.

Her 27 Grand Slam titles places her ninth on the all-time list: 13 in singles, 12 in women's doubles, and 2 in mixed doubles. She is the most recent player, male or female, to have held all four Grand Slam singles titles simultaneously and only the fifth woman in history to do so. She was also the first woman, along with sister Venus Williams, to hold all four Grand Slam doubles titles simultaneously since Martina Hingis did so in 1998. Her 13 Grand Slam singles titles is sixth on the all-time list. Williams ranks fourth in Grand Slam women's singles titles won during the open era, behind Steffi Graf (22 titles) and Chris Evert and Martina Navratilova (18 titles each). She has won more Major titles in singles, doubles, and mixed doubles than any other active player, male or female.

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.

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.