NEW YORK, NY - AUGUST 29: Daniil Medvedev of Russia returns the ball during his men's singles second round match against Stefanos Tsitsipas of Greece on Day Three of the 2018 US Open at the USTA Billie Jean King National Tennis Center on August 29, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Alex Pantling/Getty Images)
