Petra Kvitova from the Czech Republic serves the ball to Slovakia's Daniela Hantuchova during the second day of the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Tuesday, Feb. 19, 2013. (AP Photo/Kamran Jebreili)

Associated Press
Petra Kvitova from the Czech Republic serves the ball to Slovakia's Daniela Hantuchova during the second day of the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Tuesday, Feb. 19, 2013. (AP Photo/Kamran Jebreili)
Petra Kvitova from the Czech Republic serves the ball to Slovakia's Daniela Hantuchova during the second day of the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Tuesday, Feb. 19, 2013. (AP Photo/Kamran Jebreili)
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