[phillc73]

I don't follow NFL, but from what I do know the games are quite different which may result in different injury ratios.

In rugby, only the ball carrier may be tackled and there are rules against deliberate head high hits. Yet, with the speed, size and athleticism of moden players, the amount of head injuries are on the rise.

I think wearing the padded scull caps would make a big difference to accidental head trauma in rugby. Many of the top players already do.