NEW YORK, NY - AUGUST 28: Garbine Muguruza of Spain serves during the first round Women's Singles match against Varvara Lepchenko of the United States on Day One of the 2017 US Open at the USTA Billie Jean King National Tennis Center on August 28, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Richard Heathcote/Getty Images)