Novak Djokovic, from Serbia, eyes the ball during a match against Andreas Seppi, from Italy, at the Western & Southern Open tennis tournament, Wednesday, Aug. 15, 2012, in Mason, Ohio. (AP Photo/Frank Victores)
Novak Djokovic, from Serbia, eyes the ball during a match against Andreas Seppi, from Italy, at the Western & Southern Open tennis tournament, Wednesday, Aug. 15, 2012, in Mason, Ohio. (AP Photo/Frank Victores)
