Caroline Wozniacki poses with Diego Maradona at the Dubai Duty Free Tennis Championship. Julian Finney/Getty Images
Serena Williams faces the media after announcing she had pulled out of the Dubai Duty Free Tennis Championships through injury. Regi Varghese/AP
Roberta Vinci in action against Angelique Kerber during day three of the Dubai Duty Free Tennis Championships. Ali Haider/EPA
epa03592000 Germany's Angelique Kerber returns the ball to Roberta Vinci of Italy during the third day of the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, 20 February 2013. EPA/ALI HAIDER *** Local Caption *** 03592000.jpg
Jie Zheng in action against Caroline Wozniacki. Ali Haider/EPA
Agnieszka Radwanska returns the ball to Yulia Putintseva during day three at Dubai. Ali Haider/EPA
Yulia Putintseva reacts during her match against Agnieszka Radwanska. Ali Haider/EPA
The sun sets over the Dubai Duty Free stadium on day three of this year's WTA competition. Julian Finney/Getty Images
Nadia Petrova plays a forehand against Carla Suarez Navarro. Julian Finney/Getty Images
Ana Ivanovic in action against Petra Kvitova during day three of the Dubai Duty Free Tennis Championship. Julian Finney/Getty Images
Petra Kvitova returns to Ana Ivanovic. Regi Varghese/AP
Sara Errani in action in her match against Sorana Cirstea. Julian Finney/Getty Images
Sorana Cirstea of Romania faces off against Sara Errani Julian Finney/Getty Images.
Action and images from the third day's play at the Dubai Duty Free Tennis Championships.
