Jason Kubler Pictures
NEW YORK, NY - AUGUST 27: Jason Kubler of Australia returns the ball in his mens singles first round match against Roberto Bautista Agut of Spain on Day One of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2017 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Al Bello/Getty Images)