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NEW YORK, NEW YORK - SEPTEMBER : 01 Elina Svitolina of Ukraine celebrates a point during her fourth round Women's Singles match against Madison Keys of the United States on day seven of the 2019 US Open at the USTA Billie Jean King National Tennis Center on September 1, 2019 in Queens borough of New York City. (Photo by Chazz Niell/Getty Images)

NEW YORK, NEW YORK - SEPTEMBER : 01  Elina Svitolina of Ukraine celebrates a point during her fourth round Women's Singles match against Madison Keys of the United States on day seven of the 2019 US Open at the USTA Billie Jean King National Tennis Center on September 1, 2019 in Queens borough of New York City. (Photo by Chazz Niell/Getty Images)

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2017 U.S. Open Tennis Tournament - DAY THREE. Gael Monfils of France celebrates winning the fist set tie break over Jeremy Chardy of France during the Men"u2019s Singles round one match on court seventeen at the US Open Tennis Tournament at the USTA Billie Jean King National Tennis Center on August 30, 2017 in Flushing, Queens, New York City. (Photo by Tim Clayton/Corbis via Getty Images)"n

2017 U.S. Open Tennis Tournament - DAY THREE. Gael Monfils of France celebrates winning the fist set tie break over Jeremy Chardy of France during the Men"u2019s Singles round one match on court seventeen at the US Open Tennis Tournament at the USTA Billie Jean King National Tennis Center on August 30, 2017 in Flushing, Queens, New York City.  (Photo by Tim Clayton/Corbis via Getty Images)"n