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NEW YORK, NY - SEPTEMBER 02: Rafael Nadal of Spain celebrates after winning his third round Men's Singles match against Andrey Kuznetsov of Russia 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 Andy Lyons/Getty Images)

NEW YORK, NY - SEPTEMBER 02:  Rafael Nadal of Spain celebrates after winning his third round Men's Singles match against Andrey Kuznetsov of Russia 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 Andy Lyons/Getty Images)

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NEW YORK, NY - SEPTEMBER 02: Rafael Nadal of Spain celebrates after winning his third round Men's Singles match against Andrey Kuznetsov of Russia 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 Andy Lyons/Getty Images)

NEW YORK, NY - SEPTEMBER 02:  Rafael Nadal of Spain celebrates after winning his third round Men's Singles match against Andrey Kuznetsov of Russia 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 Andy Lyons/Getty Images)

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NEW YORK, NY - SEPTEMBER 02: Rafael Nadal of Spain celebrates after winning his third round Men's Singles match against Andrey Kuznetsov of Russia 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 Andy Lyons/Getty Images)

NEW YORK, NY - SEPTEMBER 02:  Rafael Nadal of Spain celebrates after winning his third round Men's Singles match against Andrey Kuznetsov of Russia 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 Andy Lyons/Getty Images)