Serbia's Novak Djokovic returns the ball to Czech Republic's Tomas Berdych during their match at the Italian Open tennis tournament in Rome, Friday, May 17, 2013. (AP Photo/Riccardo De Luca)

Associated Press
Serbia's Novak Djokovic returns the ball to Czech Republic's Tomas Berdych during their match at the Italian Open tennis tournament in Rome, Friday, May 17, 2013. (AP Photo/Riccardo De Luca)
Serbia's Novak Djokovic returns the ball to Czech Republic's Tomas Berdych during their match at the Italian Open tennis tournament in Rome, Friday, May 17, 2013. (AP Photo/Riccardo De Luca)
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