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)

Sony Open Tennis

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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