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.

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.

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.

Sloane Stephens (born March 20, 1993) is an American professional tennis player.

Stephens was born in Fort Lauderdale, Florida to Sybil Smith (who, in 1988 as a swimmer at Boston University, became the first African-American female to be named First Team All-American in Division I history) and John Stephens, a professional American football player. Stephens had no connection with her father until she was 13, when she began a close over-the-phone friendship with him. John Stephens was killed in a car accident on September 1, 2009, just before the start of the US Open. Stephens attended her father's funeral in Louisiana, but remained entered in the US Open.

She has cited Venus Williams, Serena Williams, and Kim Clijsters as her inspirations in tennis.^{[citation needed]}

Stephens had a breakthrough year in 2008, when she finished the US Open Junior doubles as runner-up alongside partner Mallory Burdette. Later at the Grade A Orange Bowl, she made it to the semifinals as a wildcard, before losing in three sets to compatriot Christina McHale.

Flavia Pennetta (born 25 February 1982 in Brindisi, Apulia) is an Italian professional tennis player. She became Italy's first top 10 female singles player on 17 August 2009 and also the first ever Italian Tennis player to be ranked No.1 in Doubles on 28 February 2011. As of 28 May 2012, Pennetta is ranked World No. 20 in singles and World No. 16 in doubles.

Pennetta has won nine career WTA singles titles, including back-to-back titles in Bogotá and Acapulco in 2005. She and her Italian teammates Mara Santangelo, Francesca Schiavone, and Roberta Vinci beat the Belgium team 3–2 in the 2006 Fed Cup final. Justine Henin had to retire in the fifth and final match due to an injury in her right knee, which let Italy win their first Fed Cup trophy. She was also a member of their winning team in 2009 and 2010, when they beat the United States on both occasions.

Pennetta has defeated multiple Grand Slam singles champions such as Justine Henin, Mary Pierce, Martina Hingis, Francesca Schiavone, Amélie Mauresmo, Venus Williams, Maria Sharapova, Caroline Wozniacki and Jelena Janković. Pennetta is also one of only seven women to beat Williams^[who?] three consecutive times. In doubles, Pennetta won her first Grand Slam title at the 2011 Australian Open with partner Gisela Dulko, and also reached the 2005 US Open final partnered with Elena Dementieva. She has also reached the US Open quarterfinals three times in singles.