Anna Djambulilovna Chakvetadze (Russian: Анна Джамбулиловна Чакветадзе; born March 5, 1987) is a Russian professional tennis player (with Georgian and Ukrainian roots). On September 10, 2007, she reached her career-high professional singles ranking of World No. 5. She has won eight WTA Singles Titles and appeared in the 2007 US Open semifinals. As of April 23, 2012, Chakvetadze is ranked World No. 402.

She began playing tennis at the age of eight after being introduced to the sport by her mother, Natalia. She travels for tournaments with her father. She speaks both Russian and English.

Chakvetadze hit her peak of World No. 5 in 2007 after a semifinal appearance at the US Open. Also in that year, she reached the quarterfinals at the Australian Open and the French Open, both of which were career bests for those events. Four of her eight career singles titles also occurred in 2007. She ended 2010 ranked inside the top 60 at number 56. The same year, she won 1 title and her 8th overall.

In 2003, she made it to the final of the Junior Championships at Wimbledon before falling to Kirsten Flipkens of Belgium 6–4, 3–6, 6–3. The same year, she won the International Bavarian Junior Challenge, defeating Marta Domachowska of Poland 7–6, 6–5. Her record as a junior was 67–19 in singles, and 22–14 in doubles. Her highest world ranking as a junior was #22 achieved in December 2003.

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.

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.