Turkey's Zeynep Sonmez hits a forehand return during the women's singles first round tennis match against USA's Coco Gauff 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)

Turkey's Zeynep Sonmez hits a forehand return during the women's singles first round tennis match against USA's Coco Gauff 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: Coco Gauff of the United States returns a shot against Zeynep Sonmez of Turkey during their Women'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 Patrick Smith/Getty Images)

NEW YORK, NEW YORK - SEPTEMBER 01: Coco Gauff of the United States returns a shot against Zeynep Sonmez of Turkey during their Women'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 Patrick Smith/Getty Images)

NEW YORK, NEW YORK - SEPTEMBER 01: Adolfo Daniel Vallejo of Paraguay returns a shot against Gael Monfils of France 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 Julian Finney/Getty Images)

USA's Coco Gauff reacts after a point during the women's singles first round tennis match against Turkey's Zeynep Sonmez 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: Coco Gauff of the United States reacts against Zeynep Sonmez of Turkey during their Women'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 Patrick Smith/Getty Images)

USA's Coco Gauff reacts after a point during the women's singles first round tennis match against Turkey's Zeynep Sonmez 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)