Croatia's Petra Martic returns the ball during her match against Venus Williams of U.S  during the first day of the WTA Qatar Ladies Open in Doha, Qatar, Monday, Feb. 10, 2014. (AP Photo/Osama Faisal)

Mideast Qatar Ladies Open Tennis

Croatia's Petra Martic returns the ball during her match against Venus Williams of U.S during the first day of the WTA Qatar Ladies Open in Doha, Qatar, Monday, Feb. 10, 2014. (AP Photo/Osama Faisal)

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