What is the rule on chop blocking. I know teams that Powell have played and they chopped Nolan a ton, and got flagged for it almost every time. I know Rhea chops a lot. Is it if the D lineman is standing you cant chop, or if the D lineman is down they can chop? I know you cant go high low, but that is not what was happening to Nolan. They were just cutting his legs out from the start of the play, Much like Rhea does. Curios on the actual rule.