Samantha Stosur, of Australia, returns a shot to Varvara Lepchenko in the third round of play at the 2012 US Open tennis tournament,  Friday, Aug. 31, 2012, in New York. (AP Photo/Mike Groll)

Photo by: Mike Groll

Samantha Stosur, of Australia, returns a shot to Varvara Lepchenko in the third round of play at the 2012 US Open tennis tournament, Friday, Aug. 31, 2012, in New York. (AP Photo/Mike Groll)