This 2024 US Open ball has been saluted by Novak Djokovic as being one of the best used on the tour and here, we get the inside story on the tennis balls being used by the star names at Flushing ...

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. Here's what it looks like inside.

What are tennis balls made of? 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 ...