Football is a simple game, in the end. Dominate the DL and OL and you have a SB contender. When the DL puts heavy pressure on the QB, the DBs and LBs don’t have to cover for as long, and therefore can cover. Instead of 8 in the box, you put 4, then the LBs drop off into zone coverage. There’s no room to throw. If the OL dominates, you run wild, setting up the play action passing and misdirections. People underestimated John Lynch. This defense plays like he did, aggressively and physically.