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What color IS a tennis ball? Internet divided over yellow or green hue as debate sparks on social media - and even Roger Federer has weighed in | Daily Mail Online
![What colour are tennis balls? Roger Federer finally confirms if they're green or yellow - Mirror Online What colour are tennis balls? Roger Federer finally confirms if they're green or yellow - Mirror Online](https://cdn.jwplayer.com/v2/media/G0FvTTxk/poster.jpg)
What colour are tennis balls? Roger Federer finally confirms if they're green or yellow - Mirror Online
WFAA - Settle the latest dumb internet debate for us... What color is a tennis ball?? 🎾 📰: on.wfaa.com/2G3G2OI | Facebook
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