NEW YORK, NEW YORK - SEPTEMBER 01: Alexander Zverev of Germany falls down against Lorenzo Sonego of Italy during their Men's Singles First Round match on Day Three of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 01, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images)

Germany's Alexander Zverev returns the ball to Italy's Lorenzo Sonego during the men's singles first round tennis match on day three of the US Open tennis tournament at the USTA Billie Jean King National Tennis Center in New York City on September 1, 2026. (Photo by CHARLY TRIBALLEAU / AFP via Getty Images)

NEW YORK, NEW YORK - SEPTEMBER 01: Alexander Zverev of Germany reacts against Lorenzo Sonego of Italy during their Men's Singles First Round match on Day Three of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 01, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images)

NEW YORK, NEW YORK - SEPTEMBER 01: Alexander Zverev of Germany reacts against Lorenzo Sonego of Italy during their Men's Singles First Round match on Day Three of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 01, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images)

NEW YORK, NEW YORK - SEPTEMBER 01: Alexander Zverev of Germany reacts against Lorenzo Sonego of Italy during their Men's Singles First Round match on Day Three of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 01, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images)

NEW YORK, NEW YORK - SEPTEMBER 01: Lorenzo Sonego of Italy reacts against Alexander Zverev of Germany during their Men's Singles First Round match on Day Three of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 01, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images)

NEW YORK, NEW YORK - SEPTEMBER 01: Alexander Zverev of Germany reacts against Lorenzo Sonego of Italy during their Men's Singles First Round match on Day Three of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 01, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images)

NEW YORK, NEW YORK - SEPTEMBER 01: Alexander Zverev of Germany reacts against Lorenzo Sonego of Italy during their Men's Singles First Round match on Day Three of the 2026 US Open at USTA Billie Jean King National Tennis Center on September 01, 2026 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Stobe/Getty Images)