Durability and performance make Wilson Championship Tennis Ball, 1-pack clear winner contains 3 balls. Designed for longer play on hard surfaces, this hard court tennis ball will give you that bounce you want again and again. Practice alone, with a friend or a few to get your game in tip-top shape. You rely on the Wilson dura-weave felt and these tennis balls deliver. 1-pack. Gender: unisex. Age Group: adult.