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2011 US Open - Day 11

NEW YORK, NY - SEPTEMBER 08: Serena Williams of the United States returns a shot against Anastasia Pavlyuchenkova of Russia during Day Eleven of the 2011 US Open at the USTA Billie Jean King National Tennis Center on September 8, 2011 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Nick Laham/Getty Images)