Novak Djokovic, of Serbia, after defeating Marcel Granollers, of Spain, in straight sets during the fourth round of the 2013 U.S. Open tennis tournament, Tuesday, Sept. 3, 2013, in New York. (AP ... more 
Novak Djokovic, of Serbia, after defeating Marcel Granollers, of Spain, in straight sets during the fourth round of the 2013 U.S. Open tennis tournament, Tuesday, Sept. 3, 2013, in New York. (AP Photo/Charles Krupa) less 
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Associated Press | Photo By Charles Krupa
Tue, Sep 3, 2013 6:22 PM EDT