Interesting idea. Would the ball bearing still work once a bit of mud and grass worked it’s way in there? Says it’s currently designed for artificial surfaces and women’s game. Worth development though.

Imagine how many ex-5-a-sides players will aim to sue Adidas, Puma and Nike.

Or perhaps the hybrid surfaces that look so much like grass but are not quite grass are causing the uptick in injuries (plus the endless 12 month match calendar).