Playbooks

2-4 Load Mug is a defensive set inside Nickel, not an offensive one, and that distinction drives everything about how you use it. The alignment puts two defensive tackles on the interior with four linebackers standing up behind them, and the "Mug" tag means two of those linebackers walk directly into the A gaps over the guards. Nickel 4-2-5 personnel is on the field (two DL, four LB by alignment with the nickel corner replacing a linebacker in coverage terms), so you get sub linebacker speed on the field while still presenting a heavy box look pre-snap. The RDT tag means the right defensive tackle is your primary interior rush threat, and that matters because your best pass rusher off the edge is often standing up in a linebacker slot instead of aligned wide.
Live in this set on second and long and third and medium, where the offense has to hold protection and you can rotate between Nickel Blitz 1 and Cover 3 Match off the same mugged picture.
Always user the free safety or the nickel corner when you call Nickel Blitz 0 or LB Blitz 0, since blown coverage in the seam is the only real death sentence off a zero blitz.
Base out of Tampa 2 and Cover 6 Willie early to build the mugged look as a coverage tell, then start firing Nickel Blitz 2 and Hot Blitz 3 once the opponent starts throwing into the middle with confidence.
Use pre snap blitz shifts to walk a mugged linebacker into a B gap when you see a slide protection tip, and pinch your two tackles to collapse the pocket interior on LB De Twist 3.
Hot route one mugged linebacker to QB contain or hook zone whenever you face an RPO or read option heavy user, which keeps a clean run fit while the remaining pressure still gets home.