Sony

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Venus Williams celebrates after defeating Anna Schmiedlova of Slovakia, 6-3, 6-3 at the Sony Open tennis tournament, Friday, March 21, 2014, in Key Biscayne, Fla. (AP Photo/Wilfredo Lee)

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Novak Djokovic, of Serbia, returns the ball to Jeremy Chardy, of France, at the Sony Open tennis tournament, Friday, March 21, 2014, in Key Biscayne, Fla. (AP Photo/Lynne Sladky)

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Varvara Lepchenko, of United States, reacts after defeating Jelena Jankovic, of Serbia, 6-3, 2-6, 7-6 (2) during the Sony Open tennis tournament, Friday, March 21, 2014, in Key Biscayne, Fla. (AP Photo/Luis M. Alvarez)

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Varvara Lepchenko returns the ball to Jelena Jankovic, of Serbia, during the Sony Open tennis tournament, Friday, March 21, 2014, in Key Biscayne, Fla. (AP Photo/Luis M. Alvarez)