France's Kristina Mladenovic serves the ball to Alison Riske, of the U.S, during the second round match of  the French Open tennis tournament at the Roland Garros stadium, in Paris, France, Thursday, May 29, 2014. (AP Photo/Michel Euler)

France Tennis French Open

France's Kristina Mladenovic serves the ball to Alison Riske, of the U.S, during the second round match of the French Open tennis tournament at the Roland Garros stadium, in Paris, France, Thursday, May 29, 2014. (AP Photo/Michel Euler)

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