I am no football guru like Harry, but I believe it is the combination of the three. Scheme-wise, we run 3-4 which means we in general only have three linemen in the base defense plus VJ loves to run two deep safety. This scheme leaves a natural lightbox. Player-wise, our linemen are not big, heavy, and nasty enough outside Jordan Philips. Watt has the technic and instinct to counter that but he was the only one. LB-wise, Jones, and Golden have the tendency to overpursue especially Golden and that has not changed a bit since he joined the NFL. My guess is he does that to compensate for his lack of speed and burst. Our ILBs are either not instinctive enough to read the defense and find the running lane (Simmons, Reddick), or are not fast and elusive enough to avoid the block and hold the gap integrity (Hicks, Vallejo, Walker). I can count four Dline/LB players on our team that are average to above average against the run, Watt, Phillips, Kennard, and Collins. Peters is OK, but he does not have the burst anymore. Fotu showed flashes but needs to be more consistent. He does not always lower his center of gravity, but he is a beast when he does. Not sure why Lawrence has not been shining in the run game yet, had high hope on him.