Michael Mmoh Pictures
NEW YORK, NY - AUGUST 25: Michael Mmoh of the United States returns a shot against Evan King (not pictured) of the United States in their men's singles qualifying third round match prior to the start of the 2017 US Open at the USTA Billie Jean King National Tennis Center on August 25, 2017 in the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA)