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 ...

“While the tennis ball has not fundamentally changed over ... allows them to be transported without the need of a pressurized plastic can. Triniti is housed in a fully recyclable package ...

When not in use, tennis balls should be stored in the can they came in. This won't prevent them from losing pressure, but can slow it down.

Now it's time for ball boys and ball girls to take center court in a reality-style documentary. Tennis Australia this ... will fully prepared you for the pressure," an Australian Open official ...