If you're a serious tennis player and you plan on playing three or four days a week, the Penn Championship tennis ball is an ...

Filmmaker Benedict Redgrove went to the Wilson factory to get the lowdown, and he explained the process in his new feature, "How to Make a Tennis Ball." Then the yellow spheres slide into ...

An curved arrow pointing right. For tennis ball machines to shoot balls with perfect accuracy and at nearly 100 miles per hour, it takes a series of carefully calibrated parts working together.

Modern tennis balls are made of a hollow rubber core, covered in a wool or nylon shell which is known as the nap. Pressurised air inside the rubber core makes the ball bounce. Balls which haven't got ...

Tennis fans might sometimes wonder what pros are doing when they stop to inspect a new ball before putting it into play. Are they stalling to contemplate strategy? Checking the manufacturer?