NEW YORK, NY - SEPTEMBER 11: Winner Stan Wawrinka of Switzerland poses during the trophy presentation after beating in 4 sets Novak Djokovic of Serbia in the men's final at Arthur Ashe Stadium on day 14 of the 2016 US Open at USTA Billie Jean King National Tennis Center on September 11, 2016 in New York City. (Photo by Jean Catuffe/Getty Images)