Poland's Agnieszka Radwanska serves during the first round match of  the French Open tennis tournament against China's Zhang Shuai at the Roland Garros stadium, in Paris, France, Sunday, May 25, 2014. (AP Photo/Darko Vojinovic)

France Tennis French Open

Poland's Agnieszka Radwanska serves during the first round match of the French Open tennis tournament against China's Zhang Shuai at the Roland Garros stadium, in Paris, France, Sunday, May 25, 2014. (AP Photo/Darko Vojinovic)

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