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NEW YORK, NY - SEPTEMBER 09: Simona Halep of Romania celebrates after defeating Victoria Azarenka of Belarus during their Women's Singles Quarterfinals match on Day Ten of the 2015 US Open at the USTA Billie Jean King National Tennis Center on September 9, 2015 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)

NEW YORK, NY - SEPTEMBER 09:  Simona Halep of Romania celebrates after defeating Victoria Azarenka of Belarus during their Women's Singles Quarterfinals match on Day Ten of the 2015 US Open at the USTA Billie Jean King National Tennis Center on September 9, 2015 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Al Bello/Getty Images)