Roger Federer

Switzerland's Roger Federer returns the ball to Spain's Rafael Nadal during their Mubadala World Tennis Championship match in the Emirati capital Abu Dhabi on December 31, 2011. AFP PHOTO/MARWAN NAAMANI (Photo credit should read MARWAN NAAMANI/AFP/Getty Images)

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One of the greatest tennis players of all time will represent Switzerland at the London Games.

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