Roger Federer

Associated Press
FILE - In this Saturday, Feb. 28, 2015 file photo, Roger Federer of Switzerland serves the ball to Novak Djokovic of Serbia during the final match of the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates. (AP Photo/Kamran Jebreili, File)

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

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