Wilson US Open XD Tennis Ball

While these balls are engineered specifically for hard court durability, they will perform on other surfaces. However, the extra-duty felt is designed to resist the abrasive nature of hard courts, so you may find they wear differently on clay or grass.

Extra Duty refers to the specific type of felt used on the ball. It is thicker and more durable than the felt found on 'regular duty' balls, allowing the ball to withstand the high friction and abrasion typical of hard court surfaces without fluffing up too quickly.

Yes, these are the official tournament balls of the U.S. Open. They meet the strict ITF standards required for professional play, ensuring consistent bounce and flight characteristics.

As with all pressurized tennis balls, they are designed to maintain their bounce until the seal is broken. Once the can is opened, the internal pressure begins to equalize with the atmosphere, and the balls will gradually lose their responsiveness over time, typically within a few days of play.

This case is an excellent choice for clubs, teams, or frequent players who go through balls quickly. Because they are tournament-grade, they offer a higher level of consistency and responsiveness than standard recreational balls, making them a great upgrade for regular practice sessions.