US Open Dress Code Rules and Enforcement
The US Open enforces a strict all-white dress code on the main courts, a tradition inherited from Wimbledon and maintained by the United States Tennis Association (USTA). Players must wear white or almost entirely white outfits, and any visible branding must be predominantly white or very muted according to the official US Open dress code page. On the outer courts, the policy is more relaxed, allowing color and bold logos, but clothing must still be neat and non-offensive per the USTA fan guidelines.
Violations can result in warnings, point penalties, or default, depending on the severity of the infraction. In 2024, several players received code violations for colored trim or undergarments that did not meet the all-white threshold as reported by tournament officials. The USTA updates the rulebook annually, and the 2025 dress code emphasizes no bright colors, no large logos, and no disruptive patterns on the main show courts.
Brands, Sponsorships, and On-Court Fashion
Nike, Adidas, Lacoste, and New Balance remain the dominant brands supplying official on-court apparel at the US Open. Nike outfits top-ranked players including Aryna Sabalenka and Carlos Alcaraz, while Adidas sponsors players like Alexander Zverev and Coco Gauff according to Forbes analysis of US Open sponsorship deals. Lacoste, a long-standing partner, supplies classic polo-style outfits that meet the all-white requirement while incorporating subtle branding.
Emerging brands such as On Running and Vuori have gained visibility through player endorsements and training wear visible during warm-ups. The US Open also features official licensed merchandise sold on-site, including polos, hats, and accessories from Ralph Lauren and other partners via the official US Open shop. In 2025, sustainable materials and recycled fabrics are increasingly featured in both on-court and fan apparel lines.
Fan Clothing Tips and Practical Guidance
Fans attending the US Open should prioritize comfort, sun protection, and adherence to venue rules. The tournament recommends lightweight breathable fabrics, hats or visors, and comfortable walking shoes, given the large grounds and long hours spent outdoors per the official US Open fan guide. Bags are subject to security screening, and oversized or professional camera bags may be restricted.
Outer court areas allow more colorful and casual attire, making them a good place for fans to showcase team colors or brand logos without violating the strict main-court white rule. The USTA also publishes a list of prohibited items, including offensive language on clothing and inappropriate slogans as stated in the official dress code. For 2025, the tournament continues to encourage fans to dress in layers for evening sessions, as temperatures at Arthur Ashe Stadium can drop significantly after sunset.