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The Wilson US Open Extra Duty tennis ball is the official ball of the US Open since 1978. The US Open tennis ball is made with exclusive felt from Tex Tech Industries for superior playability consistency and durability. The yellow extra duty felt is made for hard court surfaces. Also available are Wilson US Open Regular Duty tennis ball for clay or indoor courts Wilson US Open High Altitude tennis ball for all court surfaces over 3500 ft. elevation or Wilson US Open Grass Court tennis ball with white felt. The Wilson US Open tennis ball is both USTA and ITF approved.
- Approved by USTA and ITF for competitive play
- Official Ball of the US Open
- Made with premium woven felt
- Extra Duty: Ideal performance on hard abrasive courts
- Can includes 3 balls