NEW YORK, NY - AUGUST 31:  Mirjana Lucic-Baroni of Croatia returns a shot to Angelique Kerber of Germany 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 Joe Scarnici/Getty Images)