56 Used Tennis Balls Mostly Yonex and Wilson. These balls were collected by sorting through those used over the past three months. I gathered only those with good bounce and feel. Balls with poor feel have been discarded, so they are not included. They can be used without issue for ball feeding and serve practice. They can also be used for strokes and volleys. Also suitable for baseball batting practice, etc. Especially recommended for those who need a large number of balls. Please purchase only if you understand that these are used balls.