He didn't aim at his waist and miss. What a reach He aimed straight at the guys knee. Offensive lineman aiming at defensive lineman's knees is bad. Unfortunately it is within the rules. At least it occurs in confined spaces and generally there isn't as much momentum gained by either the offensive lineman or defensive lineman. This was out in the open field with the guy running when Suh went low, which is worse than what happens in the trenches. Bad is bad and worse is worse.