Maybe you’re a Roger Federer fan and agree with the Swiss legend that the ball is yellow. Or, maybe you’re a Rafael Nadal fan and, out of principle, side with green.

Tennis Balls Are Bright Yellow Thanks, in Part, to Sir David Attenborough — Here's Why. The British broadcaster played a role in changing the color of tennis balls, ...

A yellow version of the Titleist Pro V1 and Pro V1x golf ball will be introduced in 2019 with the next generation of the game’s most played and top-selling golf balls. The announcement came ...

Maybe you’re a Roger Federer fan and agree with the Swiss legend that the ball is yellow. Or, maybe you’re a Rafael Nadal fan and, out of principle, side with green.