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NEW YORK, NEW YORK - AUGUST 27: Dominic Thiem of Austria reacts during his Men's Singles first round match against Thomas Fabbiano of Italy on day two of the 2019 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2019 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)

NEW YORK, NEW YORK - AUGUST 27:  Dominic Thiem of Austria reacts during his Men's Singles first round match against Thomas Fabbiano of Italy on day two of the 2019 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2019 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)