USA's Coco Gauff serves against Turkey's Zeynep Sonmez during the women'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)

USA's Coco Gauff reacts during her match against Turkey's Zeynep Sonmez during the women'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)

USA's Coco Gauff hits a backhand return against Turkey's Zeynep Sonmez during the women'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: Fans look on between Coco Gauff of the United States 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 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)

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)

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)