John Isner of the U.S. returns the ball during the fourth round match of the French Open tennis tournament against Tomas Berdych of the Czech Republic at the Roland Garros stadium, in Paris, France, Sunday, June 1, 2014.  (AP Photo/Michel Spingler)

France Tennis French Open

John Isner of the U.S. returns the ball during the fourth round match of the French Open tennis tournament against Tomas Berdych of the Czech Republic at the Roland Garros stadium, in Paris, France, Sunday, June 1, 2014. (AP Photo/Michel Spingler)

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