Barbora Zahlavova Strycova, of the Czech Republic, returns the ball to Roberta Vinci, of Italy, at the Sony Open tennis tournament, Friday, March 21, 2014, in Key Biscayne, Fla. (AP Photo/Lynne Sladky)

Sony Open Tennis

Barbora Zahlavova Strycova, of the Czech Republic, returns the ball to Roberta Vinci, of Italy, at the Sony Open tennis tournament, Friday, March 21, 2014, in Key Biscayne, Fla. (AP Photo/Lynne Sladky)

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