NEW YORK, NEW YORK - AUGUST 26: Karolina Muchova of Czechia serves while playing with Jakub Mensik of Czechia during the Mixed Doubles Final of the US Open against Belinda Bencic of Switzerland and Flavio Cobolli of Italy at USTA Billie Jean King National Tennis Center on August 26, 2026 in New York City. (Photo by Sarah Stier/Getty Images)

NEW YORK, NEW YORK - AUGUST 26: Belinda Bencic of Switzerland and Flavio Cobolli of Italy react after a point during the Mixed Doubles Final of the US Open against Karolina Muchova of Czechia and Jakub Mensik of Czechia at USTA Billie Jean King National Tennis Center on August 26, 2026 in New York City. (Photo by Caleb Bowlin/Getty Images)

NEW YORK, NEW YORK - AUGUST 26: Belinda Bencic of Switzerland and Flavio Cobolli of Italy interact during the Mixed Doubles Final of the US Open against Karolina Muchova of Czechia and Jakub Mensik of Czechia at USTA Billie Jean King National Tennis Center on August 26, 2026 in New York City. (Photo by Sarah Stier/Getty Images)

NEW YORK, NEW YORK - AUGUST 26: Belinda Bencic of Switzerland and Flavio Cobolli of Italy react after a point during the Mixed Doubles Final of the US Open against Karolina Muchova of Czechia and Jakub Mensik of Czechia at USTA Billie Jean King National Tennis Center on August 26, 2026 in New York City. (Photo by Sarah Stier/Getty Images)

NEW YORK, NEW YORK - AUGUST 26: Belinda Bencic of Switzerland and Flavio Cobolli of Italy react after a point during the Mixed Doubles Final of the US Open against Karolina Muchova of Czechia and Jakub Mensik of Czechia at USTA Billie Jean King National Tennis Center on August 26, 2026 in New York City. (Photo by Caleb Bowlin/Getty Images)

NEW YORK, NEW YORK - AUGUST 26: Karolina Muchova of Czechia and Jakub Mensik of Czechia interact during the Mixed Doubles Final of the US Open against Belinda Bencic of Switzerland and Flavio Cobolli of Italy at USTA Billie Jean King National Tennis Center on August 26, 2026 in New York City. (Photo by Caleb Bowlin/Getty Images)

NEW YORK, NEW YORK - AUGUST 26: Flavio Cobolli of Italy reacts while playing with Belinda Bencic of Switzerland during the Mixed Doubles Final of the US Open against Karolina Muchova of Czechia and Jakub Mensik of Czechia at USTA Billie Jean King National Tennis Center on August 26, 2026 in New York City. (Photo by Caleb Bowlin/Getty Images)

NEW YORK, NEW YORK - AUGUST 26: Flavio Cobolli of Italy reacts while playing with Belinda Bencic of Switzerland during the Mixed Doubles Final of the US Open against Karolina Muchova of Czechia and Jakub Mensik of Czechia at USTA Billie Jean King National Tennis Center on August 26, 2026 in New York City. (Photo by Caleb Bowlin/Getty Images)