NEW YORK, NY - AUGUST 31: Madison Keys of the United States acknowledges the crowd after defeating Kayla Day of the United States during her second round Women's Singles match on Day Three of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 31, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Michael Reaves/Getty Images)
