He was just mentioned on today's Lateral podcast with Tom Scott. Apparently, he's the reason tennis balls are yellow. I guess they were traditionally white but when they started broadcasting matches on TV it was too hard to see the ball. David who was at the BBC at the time suggested they use yellow balls instead so they would come through on camera. Ever since then tennis balls have been yellow.
What do you mean tennis balls are yellow? I always thought they were green? https://en.wikipedia.org/wiki/Tennis_ball#/media/File:Closeu...
> Tennis balls are fluorescent yellow in professional competitions