Roger Federer

Switzerland's Roger Federer returns the ball to Russia's Nikolay Davydenko during their ATP Dubai Open tennis quarter final match in the Gulf emirate on February 28, 2013.

( Marwan Naamani/AFP/Getty Images )

Switzerland's Roger Federer returns the ball to Russia's Nikolay Davydenko during their ATP Dubai Open tennis quarter final match in the Gulf emirate on February 28, 2013.

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