A thread that should give you an idea of the run-stuffing ability of Malik Harrison:

Watch how hard Harrison crashes down here. 65 is stopped dead in his tracks, his head snapping back from the force of the hit, leaving the RB nowhere to go inside.

Harrison overpowers the LG to quickly close the hole on the RB.

Harrison instantly diagnoses the C and RT pulling to the left, so he flies down to set the edge and force the RB back inside.

Another instance of Harrison completely stonewalling an OL, this time the C, forcing the RB to redirect.