Japan's Misaki Doi returns the ball during the first round match of the French Open tennis tournament against Germany's Andrea Petkovic at the Roland Garros stadium, in Paris, France, Monday, May 26, 2014. (AP Photo/Darko Vojinovic)

APTOPIX France Tennis French Open

Japan's Misaki Doi returns the ball during the first round match of the French Open tennis tournament against Germany's Andrea Petkovic at the Roland Garros stadium, in Paris, France, Monday, May 26, 2014. (AP Photo/Darko Vojinovic)

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