Wilson US Open Regular Duty Tennis Balls - Regular Duty: Optimal performance and durability on clay/indoor courts (Image may vary from actual product)

• For the past 40+ years, every point at the US Open has been scored with a Wilson US Open tennis ball. Unparalleled consistency and performance make it the gold standard in tennis, trusted by the best in the game when it's all on the line. Crafted with premium woven felt, this ball is available in Extra Duty, Regular Duty and High Altitude variations.