Vera Zvonareva (Russian: Вера Игоревна Звонарёва, pronounced [ˈvʲerə zvənɐˈrʲɵvə] ( listen); born September 7, 1984) is a professional tennis player from Russia. She was introduced to tennis at the age of six and turned professional in 2000. Her career high is World No. 2 by the WTA, and she is currently ranked as the World No. 11. Zvonareva has won twelve WTA Tour singles titles and reached the finals of the 2008 WTA Tour Championships, 2010 Wimbledon Championships, and 2010 US Open. She also was a bronze medalist at the 2008 Beijing Olympics.

Zvonareva was born September 7, 1984 in Moscow to Igor Zvonarev and Nataliya Zvonareva (née Bykova). Igor played Bandy in the USSR championship with Dynamo Moscow, while Nataliya played field hockey and was the bronze medalist at the 1980 Moscow Olympic Games. Vera was introduced to tennis at the age of six by her mother, although no other members of her family play tennis.

Zvonareva started to compete on the ITF Circuit in 1999, debuting at an ITF tournament in Tbilisi, Georgia. She won three qualifying matches there to reach the main draw before losing in the first round. The next year, she won an ITF event in Moscow, Russia without dropping a set, despite being unranked. The event was just the second event she had played in her professional career. Five weeks later, she made her WTA-level debut at the Tier I tournament in Moscow, beating World No. 148 Elena Bovina, before losing to World No. 11 Anna Kournikova in the second round. In 2001, she failed to qualify for WTA events in Key Biscayne, Florida and Moscow, but reached a semifinal at the ITF Circuit tournament in Civitanova, Italy. During this time, she also showed her adeptness in juniors' competition by winning the Orange Bowl under-18s event in 2000 and 2001.

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.