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NEW YORK, NY - SEPTEMBER 02: Leonardo Mayer of Argentina reacts against Rafael Nadal of Spain during their third round Men's Singles match on Day Six during the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2017 in the Queens borough of New York City. (Photo by Mike Stobe/Getty Images for USTA)

NEW YORK, NY - SEPTEMBER 02:  Leonardo Mayer of Argentina reacts against  Rafael Nadal of Spain during their third round Men's Singles match on Day Six during the 2017 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2017 in the Queens borough of New York City.  (Photo by Mike Stobe/Getty Images for USTA)