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NEW YORK, NY - AUGUST 27: Simona Halep of Romania waves to the fans after her loss in her women's singles first round match against Kaia Kanepi of Estonia on Day One of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)

NEW YORK, NY - AUGUST 27:  Simona Halep of Romania waves to the fans after her loss in her women's singles first round match against Kaia Kanepi of Estonia on Day One of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2018 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Elsa/Getty Images)