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NEW YORK, NY - SEPTEMBER 11: Stan Wawrinka of Switzerland celebrates with the trophy after defeating Novak Djokovic of Serbia with a score of 6-7, 6-4, 7-5, 6-3 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 Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)

NEW YORK, NY - SEPTEMBER 11:  Stan Wawrinka of Switzerland celebrates with the trophy after defeating Novak Djokovic of Serbia with a score of 6-7, 6-4, 7-5, 6-3 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 Flushing neighborhood of the Queens borough of New York City.  (Photo by Mike Hewitt/Getty Images)