Petra Cetkovska of the Czech Republic returns the ball to Angelique Kerber of Germany during the quarterfinals of the WTA Qatar Ladies Open in Doha, Qatar, Friday, Feb. 14, 2014. (AP Photo/Osama Faisal)

Mideast Qatar Ladies Open Tennis

Petra Cetkovska of the Czech Republic returns the ball to Angelique Kerber of Germany during the quarterfinals of the WTA Qatar Ladies Open in Doha, Qatar, Friday, Feb. 14, 2014. (AP Photo/Osama Faisal)

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