Originally Posted by Lady Steel
Looks like a clean hit to me, too.
That's right. Sometimes shit happens.
helmet to the chin, you don't get knocked out from getting hit in the chest. according to current nfl rules, that's an illegal hit (helmet to helmet). a couple inches lower and it's legal
nfl is trying to stop the occurence of head injuries, and anytime you get a blow severe enough to cause a knockout, that's brain damage to some extent guaranteed