Novak Djokovic, of Serbia, returns a shot to Joao Sousa, of Portugal, during a third round match at the U.S. Open tennis tournament, Sunday, Sept. 1, 2013, in New York. (AP Photo/Darron Cummings)
1 / 31
Associated Press | Photo By Darron Cummings
Sun, Sep 1, 2013 9:13 PM EDT