NEW YORK, NEW YORK - AUGUST 26: Jakub Mensik of Czechia reacts while playing with Karolina Muchova of Czechia in the Mixed Doubles Semifinal of the US Open against Mirra Andreeva and Andrey Rublev at USTA Billie Jean King National Tennis Center on August 26, 2026 in New York City. (Photo by Caleb Bowlin/Getty Images)