Wilson US Open Extra Duty 4 Balls Tennis

4-ball tennis ball boot Wilson US Open Extra Duty

For more than 40 years, each point at the US Open has scored with a tennis ball Wilson US Open. An unprecedented consistency and performance make it a gold standard in tennis, with the confidence of the best on the track when everything is at stake. This ball, made with high quality felt fabric to provide superior bounce features throughout three sets, is available in the Extra Duty, Regular Duty and High Altitude versions to ensure optimal performance on the playing surface you prefer.

● Approved by USTA and ITF for competition matches

● Official US Open Ball

● Made with high quality fabric felt

● Extra Duty: ideal performance on hard and abrasive tracks

● Regular Duty: ideal performance on soft ground tracks or covered

● High altitude: ideal surface performance at more than 3000 ft (900 m)