Maria Sharapova of Russia reacts as she returns a shot to Samantha Stosur of Australia during their tennis match on the fourth day of the WTA championship in Istanbul, Turkey, Friday,

 

              Maria Sharapova of Russia reacts as she returns a shot to Samantha Stosur of Australia  during their tennis match on the fourth day of the WTA championship in Istanbul, Turkey, Friday,
Maria Sharapova of Russia reacts as she returns a shot to Samantha Stosur of Australia during their tennis match on the fourth day of the WTA championship in Istanbul, Turkey, Friday, Oct. 26, 2012. (AP Photo)