Wozniacki, Kvitova serve up wins at the WTA finals

Associated Press
Maria Sharapova of Russia reacts during a tennnis match against Samantha Stosur of Australia at the WTA championship in Istanbul, Turkey, Tuesday, Oct. 25, 2011. Sharapova lost to Stosur 6-1, 7-5. (AP Photo/Vadim Ghirda)

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Top-ranked Caroline Wozniacki rallied to defeat Agnieszka Radwanska of Poland 5-7, 6-2, 6-4 Tuesday in their opening round-robin match at the WTA Championships. (AP)

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