Wilson US Open Extra Duty (3 balls Can)

• Optimal performance
• durability on hard courts
• Premium Grade Wool for superior playability

The Official US Open Ball Every September, the toughest tournament in the world uses over 70,000 Wilson U.S. Open tennis balls. Wilson has been the "Official Ball of the United States Open" since 1979. The Wilson U.S. Open tennis ball is known for its superior playability, consistency, and durability due to its construction of premium high-grade wool woven into a thicker, denser felt.