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.

Caroline Wozniacki (born 11 July 1990) is a Danish professional tennis player. She is a former world no. 1 on the WTA Tour. As of 23 January 2012, she held this position for 67 weeks. She is the first Scandinavian woman to hold the top ranking position and 20th overall.

Since her WTA debut in 2005, she has improved her year-end ranking each year until finishing on top in both 2010 and 2011. She has won 18 WTA singles titles as of August 2011, three in 2008, three in 2009, six in 2010 (the most since Justine Henin's ten in 2007), and six in 2011. She was runner-up at the 2009 US Open and the 2010 WTA Tour Championships in Doha to Kim Clijsters. She won the 2006 Wimbledon Girls' Singles title but has yet to win a women's Grand Slam title. She also holds two WTA titles in doubles.

Wozniacki is the daughter of Polish Roman Catholicimmigrants, Piotr and Anna Wozniacki. Anna played on the Polish women's national volleyball team, and Piotr played professional football. The couple moved to Denmark when Piotr signed for the Danish football club Boldklubben 1909. Wozniacki's older brother Patrik Wozniacki is a professional footballer for Hvidovre IF in Denmark.