Dominika Cibulková (born 6 May 1989 in Piešťany, Czechoslovakia, now Slovakia) is a professional Slovak tennis player. She is also a former world junior no. 3, achieving that ranking in May 2005. Her career-high ranking of world no. 12 was achieved on 6 July 2009. Her best result was reaching the semi-finals of the 2009 French Open, while she has also reached the quarter-finals at the 2010 US Open and the 2011 Wimbledon Championships. Cibulková has also won one title on the WTA tour, winning the tournament in Moscow in 2011.

Cibulková began playing tennis between the ages of seven and nine and grew up in Bratislava, Slovakia. She can speak both Slovak and English.

She lists clay and hard as her favourite surfaces, and has thus far proved to be most proficient on a hard surface.

Cibulková competed predominantly on the ITF circuit at this time, and managed to win two tournaments: the Amarante, Portugal event in 2005, and the Bratislava event in 2006.

Cibulková started her year with a win over Tara Iyer in the first round of the CANARA Bank Open, but lost to no. 4 seed Jelena Kostanić Tošić in the second round.

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.

Martina Hingis (born 30 September 1980) is a retired Swiss professional tennis player who spent a total of 209 weeks as World No. 1. She won five Grand Slam singles titles (three Australian Opens, one Wimbledon, and one US Open). She also won nine Grand Slam women's doubles titles, winning a calendar year doubles Grand Slam in 1998, and one Grand Slam mixed doubles title.

Hingis set a series of "youngest-ever" records before ligament injuries in both ankles forced her to withdraw temporarily from professional tennis in 2002 at the age of 22. After several surgeries and long recuperations, Hingis returned to the WTA tour in 2006. She then climbed to world number 6 and won three singles titles. On 1 November 2007, Hingis announced her retirement from tennis after testing positive for cocaine during Wimbledon in 2007. She denied using the drug, but decided not to appeal the imminent ban.

In June 2011, she was named one of the "30 Legends of Women's Tennis: Past, Present and Future" by Time.

Hingis was born in Košice, (then part of Czechoslovakia, now in modern Slovakia), to accomplished tennis players Melanie Molitorová and Karol Hingis. Molitorová was a professional tennis player, who was once ranked tenth among women in Czechoslovakia, and was determined to develop Hingis into a top player as early as pregnancy. Her father was ranked as high as nineteenth in the Czechoslovakian tennis rankings. Hingis's parents divorced when she was six, and she and her mother relocated around a year later to Trübbach in Switzerland. Her father, who continued to live in Košice as a tennis coach, said in 1997 that he had seen little of his daughter after the split.

Simona Halep (born September 27, 1991) is a world top-50 tennis player playing on the ITF Women's Circuit and the WTA Tour, and is currently the number-two ranked women's tennis player in Romania, behind Monica Niculescu (out of 6 in the top-100).

Halep's father Stere runs a cheese and milk factory. She started playing tennis at age four, in emulation of her older brother. She has self-described her playing style as being "an aggressive baseliner," while New York Times columnist Michael Kimmelman described her as "a scrappy player from Romania, short but with potent ground strokes and a scrambler’s talent." In a post-match interview Serena Williams once commented that Halep "serves well [for] her height... She has so much power on her serve."

She started the year with a final in Nottinghill, losing to Arantxa Rus, then defeated Anastasia Pavlyuchenkova in the quarterfinals at the Australian Open Junior Championships, before losing in the semifinal to Jessica Moore.

At the ITF $50,000 tournament in Bucharest, Halep eliminated former Roland Garros semi-finalist Sesil Karatantcheva in the first round, before losing in the quarterfinals to Sorana Cîrstea in three sets, 6–3, 3–6, 1–6.