Croatia's Ivo Karlovic clenches his fist after scoring a point during the first round match of the French Open tennis tournament against Bulgaria's Grigor Dimitrov at the Roland Garros stadium, in Paris, France, Tuesday, May 27, 2014. (AP Photo/Michel Spingler)

France Tennis French Open

Croatia's Ivo Karlovic clenches his fist after scoring a point during the first round match of the French Open tennis tournament against Bulgaria's Grigor Dimitrov at the Roland Garros stadium, in Paris, France, Tuesday, May 27, 2014. (AP Photo/Michel Spingler)

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