US Open Extra Duty 4X Ball Case (18 Cans of 4X) Dunlop Whether you're grinding baseline rallies

Whether you're grinding baseline rallies or attacking at net

spin and control targeted to intermediate and advanced players

The unstructured design of the Rafa cap offers a barely-there feel

Click-and-Go

making for a smooth transition from stopping to acceleration

US Open Extra Duty 4X Ball Case (18 Cans of 4X) Dunlop Whether you're grinding baseline ralliesThe US Open Extra Duty 4X Ball Case contains 18 cans of high performance tennis balls designed specifically for hard court play. Engineered to deliver consistent bounce and durability, these balls withstand the intensity of hard surfaces while maintaining optimal flight and control. Perfect for serious players and tournaments, this bulk case ensures youre always prepared with premium quality balls that enhance your game.