BELGRADE - MAY 6: Novak Djokovic returns the ball during "Serbia Open 2010" ATP World Tour match against Fabio Fognini May 6, 2010 in Belgrade, Serbia.
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BELGRADE - MAY 6: Novak Djokovic returns the ball during "Serbia Open 2010" ATP World Tour match against Fabio Fognini May 6, 2010 in Belgrade, Serbia.