If all tennis balls have a nap, why do players bother ... The ball is now ready for the court—and for people to argue whether it’s yellow or green. Have you got a Big Question you'd like ...

In tournaments, all balls have to be white or yellow in colour. This year, Slazenger is supplying 52,200 tennis balls to Wimbledon. About 20,000 of these are used for qualifying and practice. Every ...

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