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NEW YORK, NY - SEPTEMBER 02: Madison Keys of the United States celebrates her victory over Naomi Osaka of Japan during her third round Women's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)

NEW YORK, NY - SEPTEMBER 02:  Madison Keys of the United States celebrates her victory over Naomi Osaka of Japan during her third round Women's Singles match on Day Five of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 2, 2016 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Elsa/Getty Images)