Angelique Kerber of Germany returns the ball to Ana Ivanovic of Serbia during the second round of Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Tuesday, Feb. 18, 2014. (AP ... more 
Angelique Kerber of Germany returns the ball to Ana Ivanovic of Serbia during the second round of Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Tuesday, Feb. 18, 2014. (AP Photo/Kamran Jebreili) less 
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Associated Press | Photo By Kamran Jebreili
Tue, Feb 18, 2014 12:15 PM EST