The NFL is also trying to lay down a firewall against lawsuits related to concussions and ill effects after player's career end.

The unfortunate part is that that researchers have made a determination that so far, the players most likely to suffer from the known effects of head trauma, are among the least likely to get involved in the spectacular hits downfield (or on the QB) that scream out concussion.

The bulk of the trauma that researchers have been able to document comes on the LOS, play after play, of lineman and backers running into people at close proximity. Its some of the mildest force on the field, but the repetitive nature may be the trigger later on.

If this research were to hold up, then looking at the rules of formation might be the way to go. And High Schools might regret outlawing the A-11 offense.