Samantha Stosur of Australia returns the ball to Maria Sharapova of Russia in the quarterfinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Friday, Feb. 15, 2013. (AP

 

              Samantha Stosur of Australia returns the ball to Maria Sharapova of Russia in the quarterfinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Friday, Feb. 15, 2013. (AP
Samantha Stosur of Australia returns the ball to Maria Sharapova of Russia in the quarterfinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Friday, Feb. 15, 2013. (AP Photo/Osama Faisal)