NEW YORK, NEW YORK - AUGUST 31: Stan Wawrinka of Switzerland acknowledges the crowd after a loss against Matteo Berrettini of Italy during their Men's Singles First Round match on Day Two of the 2026 US Open at USTA Billie Jean King National Tennis Center on August 31, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Caleb Bowlin/Getty Images)

NEW YORK, NEW YORK - AUGUST 31: US Open Tournament Director Eric Butorac looks to present a poster to Stan Wawrinka of Switzerland after a loss against Matteo Berrettini of Italy during their Men's Singles First Round match on Day Two of the 2026 US Open at USTA Billie Jean King National Tennis Center on August 31, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Caleb Bowlin/Getty Images)

NEW YORK, NEW YORK - AUGUST 31: US Open Tournament Director Eric Butorac looks to present a poster to Stan Wawrinka of Switzerland after a loss against Matteo Berrettini of Italy during their Men's Singles First Round match on Day Two of the 2026 US Open at USTA Billie Jean King National Tennis Center on August 31, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Caleb Bowlin/Getty Images)

NEW YORK, NEW YORK - AUGUST 31: Stan Wawrinka of Switzerland acknowledges the crowd after a loss against Matteo Berrettini of Italy during their Men's Singles First Round match on Day Two of the 2026 US Open at USTA Billie Jean King National Tennis Center on August 31, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Caleb Bowlin/Getty Images)

NEW YORK, NEW YORK - AUGUST 31: Stan Wawrinka of Switzerland acknowledges the crowd after a loss against Matteo Berrettini of Italy during their Men's Singles First Round match on Day Two of the 2026 US Open at USTA Billie Jean King National Tennis Center on August 31, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Caleb Bowlin/Getty Images)

NEW YORK, NEW YORK - AUGUST 31: Stan Wawrinka of Switzerland acknowledges the crowd after a loss against Matteo Berrettini of Italy during their Men's Singles First Round match on Day Two of the 2026 US Open at USTA Billie Jean King National Tennis Center on August 31, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Caleb Bowlin/Getty Images)

NEW YORK, NEW YORK - AUGUST 31: Stan Wawrinka of Switzerland acknowledges the crowd after a loss against Matteo Berrettini of Italy during their Men's Singles First Round match on Day Two of the 2026 US Open at USTA Billie Jean King National Tennis Center on August 31, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Caleb Bowlin/Getty Images)

FILE - Linda Noskova of the Czech Republic poses with the trophy after winning against Karolina Muchova of the Czech Republic in the women's singles final at Wimbledon Tennis Championships in London, July 11, 2026. (AP Photo/Kirsty Wigglesworth, File)