NEW YORK, NEW YORK - SEPTEMBER 01: Coco Gauff of the United States walks out while wearing an Oura ring before her Women's Singles First Round match against Zeynep Sonmez of Turkey 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)