Tomas Berdych, of the Czech Republic, keeps his eyes on the ball as he returns to Alexandr Dolgopolov, of Ukraine, at the Sony Open Tennis tournament in Key Biscayne, Fla., Thursday, March 27, 2014. Berdych won 6-4, 7-6 (3). (AP Photo/Alan Diaz)

Key Biscayne Tennis

Tomas Berdych, of the Czech Republic, keeps his eyes on the ball as he returns to Alexandr Dolgopolov, of Ukraine, at the Sony Open Tennis tournament in Key Biscayne, Fla., Thursday, March 27, 2014. Berdych won 6-4, 7-6 (3). (AP Photo/Alan Diaz)

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