NEW YORK, NY - AUGUST 30: Sam Querrey of the United States returns a shot to Novak Djokovic of Serbia during their men's singles third round match on Day Six of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Streeter Lecka/Getty Images)
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