NEW YORK, NEW YORK - AUGUST 27: Jozef Kovalik of Slovakia returns a shot against Thanasi Kokkinankis of Australia during their Men's Singles first round match on day two of the 2019 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2019 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images)
