NEW YORK, NEW YORK - SEPTEMBER 05: A detail shot of the racket held by Learner Tien of the United States against Jakub Mensik of Czechia during their Men's Singles Third Round match on Day Seven of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 05, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Caleb Bowlin/Getty Images)