Almost once a game, an NFL player absorbs an illegal blow to the head or neck that could put his career - or worse - at risk. The NFL has been trying to prevent such blows over the past four years, targeting improper technique and making a point to penalize and fine players for hits that leave them and their opponents vulnerable. The AP reviewed 549 penalties, 491 of which fell under the category of major infractions: unnecessary roughness, unsportsmanlike conduct, roughing the passer, face masks and roughing the quarterback. Of the penalties charted over the first 162 games of the season, the AP identified 156 involving contact with the head and neck - an average of .962 per game. More...