Stanislas Wawinka, of Switzerland, celebrates after winning a game against Edouard Roger-Vasselin, of France, during the Sony Open Tennis in Key Biscayne, Fla., Monday, March 24, 2014. (AP Photo/J Pat Carter)

Key Biscayne Tennis

Stanislas Wawinka, of Switzerland, celebrates after winning a game against Edouard Roger-Vasselin, of France, during the Sony Open Tennis in Key Biscayne, Fla., Monday, March 24, 2014. (AP Photo/J Pat Carter)

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