NEW YORK, NEW YORK - SEPTEMBER 03: Karen Khachanov of Russia serves against Felix Auger-Aliassime of Canada during their Men's Singles Second Round match on Day Five of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 03, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Matthew Stockman/Getty Images)