NEW YORK, NEW YORK - AUGUST 28: Bradley Klahn of the United States serves during his Men's Singles second round match against Kei Nishikori of Japan on day three of the 2019 US Open at the USTA Billie Jean King National Tennis Center on August 28, 2019 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images)
