![Wilson Tennis on Twitter: "@sharonmjay @Tennis_Now @usopen @AustralianOpen The difference between the AO and US Open ball is the felt. The cores are the same but the felt has 2 differences: The Wilson Tennis on Twitter: "@sharonmjay @Tennis_Now @usopen @AustralianOpen The difference between the AO and US Open ball is the felt. The cores are the same but the felt has 2 differences: The](https://pbs.twimg.com/media/DpuoUpMUcAAngx5.jpg)
Wilson Tennis on Twitter: "@sharonmjay @Tennis_Now @usopen @AustralianOpen The difference between the AO and US Open ball is the felt. The cores are the same but the felt has 2 differences: The
![US Open Wilson Tennis Balls at Billie Jean King National Tennis Center in New York Editorial Image - Image of tournament, ashe: 90264315 US Open Wilson Tennis Balls at Billie Jean King National Tennis Center in New York Editorial Image - Image of tournament, ashe: 90264315](https://thumbs.dreamstime.com/b/us-open-wilson-tennis-balls-billie-jean-king-national-tennis-center-new-york-august-official-ball-90264315.jpg)
US Open Wilson Tennis Balls at Billie Jean King National Tennis Center in New York Editorial Image - Image of tournament, ashe: 90264315
![USTA says decisions on tennis balls used for US Open made in consultation with tours, player councils USTA says decisions on tennis balls used for US Open made in consultation with tours, player councils](https://a1.espncdn.com/combiner/i?img=%2Fphoto%2F2022%2F0824%2Fr1052675_993x558_16%2D9.jpg)