Serena Williams hits a backhand in her vicotry over Andrea Hlavackova at the U.S. Open in New York on Sept. 3, 2012. Photographer: Al Bello/Getty Images
Serena Williams hits a backhand in her vicotry over Andrea Hlavackova at the U.S. Open in New York on Sept. 3, 2012. Photographer: Al Bello/Getty Images
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