Caroline Wozniacki has won several junior tournaments (including the 2006 Wimbledon girls’ singles tournament and the 2005 Orange Bowl tennis championship), and made her debut on the Sony Ericsson WTA Tour at Cincinnati’s Western & Southern Financial Group Women’s Open on 19 July 2005, losing to the top-seeded and later champion Patty Schnyder in the first round.
Caroline is considered to be a defensive counter-puncher and wins many points by forcing opponent errors and running down so many balls. Her movement and speed allow her to retrieve most balls hit by her opponent. She has improved her game and has become more aggressive and controlling of points.
Wozniacki is able to effectively absorb power from her opponents with her forehand. However, it is her two-handed backhand which is her more powerful and controlled swing. She is known for her backhand down the line. The semi-western grips that she employs on both wings allow her to hit her shots with topspin.
She can play relatively well on all surfaces.
Wozniacki was the number 1 seed at the 2010 e-Boks Danish Open. It was the first Danish WTA tournament and was created largely because of Wozniacki’s popularity in Denmark. She reached the final where she defeated Klara Zakopalova to win her second title of the year.
In Cincinnati, she lost in the third round to Marion Bartoli 6–4, 6–1. As the number 2 seed in Montreal, Wozniacki was forced to wait two days to play her semifinal match with Svetlana Kuznetsova because of heavy rain. She defeated Kuznetova and Vera Zvonareva back-to-back for her third singles title of the year. As the top seed at New Haven, Wozniacki defeated Nadia Petrova 6–3, 3–6, 6–3 in the final for her third consecutive title there. By virtue of this, she also won the 2010 US Open Series.
Wozniacki was the top seed at the US Open, due to the withdrawal of World No. 1 Serena Williams. She cruised through to the fourth round with the loss of just 3 games. There, she defeated the 2006 US Open champion Maria Sharapova 6–3, 6–4. She then defeated unseeded Dominika Cibulková 6–2, 7–5 in the quarterfinals but was upset by Vera Zvonareva in the semifinals by a score of 6–4, 6–3. With her semifinal appearance, Wozniacki became only one of two women (the other being Venus Williams) to have reached at least the fourth round of all 4 Grand Slam events in 2010.