Put it this way, I just watched a scrimmmage and saw a slot, who is already lined up outside the box, run outside by 4-5 yards, and crack back inside on a lineman, and went low. So illegal it's not funny! Not to mention how dangerous. I'm not opposed to a crack-back block, but go stomach or chest high. Aiming at a knee from the side like this is ridiculous, especially when we were all sent the rule.
