Angelique Kerber of Germany serves the ball to Petra Cetkovska of the Czech Republic 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

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

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