NEW YORK, NY - SEPTEMBER 11: Stan Wawrinka of Switzerland returns a shot against Novak Djokovic of Serbia during their Men's Singles Final Match on Day Fourteen of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 11, 2016 in the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)
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