NEW YORK, NY - SEPTEMBER 03:  Ana Konjuh of Croatia returns a shot to Varvara Lepchenko of the United States during her third round Women's Singles match on Day Six of the 2016 US Open at the USTA Billie Jean King National Tennis Center on September 3, 2016 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Elsa/Getty Images)