Wilson US Open XD Tball 3 Ball Case

The US Open's Official Ball Every September, over 70,000 Wilson U.S. Open tennis balls are used in the world's toughest tournament. Wilson has held the distinction of being the "Official Ball of the United States Open" since 1979.

The Wilson U.S. Open tennis ball is made of premium high-grade wool that is woven into a thicker, denser felt and is known for its superior playability, consistency, and durability.