NEW YORK, NEW YORK - SEPTEMBER 02: Marta Kostyuk of Ukraine returns a shot against Sloane Stephens of the United States during their Women's Singles Second Round match on Day Four of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 02, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Patrick Smith/Getty Images)