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• What colour do you think these tennis balls are? - BBC News

What colour do you think these tennis balls are? - BBC News

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Roger Federer weighs in on the debate as people are divided on whether tennis balls are yellow or green.

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Tennis Balls Are Bright Yellow Thanks, in Part, to Sir David

The reason tennis balls are yellow is largely thanks to Sir David

What colour do you think these tennis balls are? - BBC News

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The reason tennis balls are yellow is largely thanks to Sir David

Why tennis balls are yellow is largely thanks to Sir David