[sonick]

I caveat to say I follow little about football, and although hit on Tua was scary but for real he lowered his head and used it to absorb the hit? Like what else could the defender have done? He was standing there to block when Tua ran into him head first.

If that's your default response to a block and you have a pattern of concussions it's almost like, what's the cause and effect here?

Sad to think how many he had before this coming up the ranks yet was ignored by coaches etc.