Jarkko Nieminen, of Finland,  returns the ball to Alexandr Dolgopolov, of Ukraine, during the Sony Open tennis tournament, Saturday, March 22, 2014, in Key Biscayne, Fla. (AP Photo/Luis M. Alvarez)

Sony Open Tennis

Jarkko Nieminen, of Finland, returns the ball to Alexandr Dolgopolov, of Ukraine, during the Sony Open tennis tournament, Saturday, March 22, 2014, in Key Biscayne, Fla. (AP Photo/Luis M. Alvarez)

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