Maria Sharapova, of Russia, hits tennis balls to the fans after defeating Kirsten Flipkens, of Belgium, 3-6, 6-4, 6-1, at the Sony Open tennis tournament, Monday, March 24, 2014, in Key Biscayne, Fla. (AP Photo/Lynne Sladky)

Sony Open Tennis

Maria Sharapova, of Russia, hits tennis balls to the fans after defeating Kirsten Flipkens, of Belgium, 3-6, 6-4, 6-1, at the Sony Open tennis tournament, Monday, March 24, 2014, in Key Biscayne, Fla. (AP Photo/Lynne Sladky)

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