Petra Cetkovska of the Czech Republic returns the ball to Na Li of China during the fourth day of the WTA Qatar Ladies Open in Doha, Qatar, Thursday, Feb. 13, 2014. (AP Photo/Osama Faisal)

Mideast Qatar Ladies Open Tennis

Petra Cetkovska of the Czech Republic returns the ball to Na Li of China during the fourth day of the WTA Qatar Ladies Open in Doha, Qatar, Thursday, Feb. 13, 2014. (AP Photo/Osama Faisal)

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