Playbooks

HB Gut is a downhill run play out of Weak I with 21 personnel, designed to attack the interior of the defense behind a fullback lead blocker. The diagram shows the HB taking a tight handoff and cutting hard downhill through the guard-center gap, with the FB kicking out the first defender in the hole to create the alley. This is a pure run play, not a play-action or RPO, and the blocking scheme relies on down blocks from the offensive line combined with the FB's gut lead block to seal the point of attack. The primary read is a one-cut, downhill decision: identify the FB's kickout block and squeeze through the natural crease it creates before defenders can flow and fill.
Pre-snap, check linebacker depth and alignment: stacked or crowded box linebackers signal a run blitz that can blow up the FB's kickout block before it develops. Watch for a Mike linebacker cheating toward the strong side, which indicates the defense has diagnosed the gut concept and will fill the A gap immediately. This play struggles against gap-control defenses and stacked fronts with disciplined edge defenders who stay square, since there is no outside threat to hold them honest. It beats light boxes and defenses in two-high shells that have removed a linebacker for coverage, since the numbers advantage at the point of attack becomes decisive. Post-snap, key the defensive tackle across from the center: if he is not sealed by the double team, the play dies in the backfield, so a quick user-controlled linebacker fill can end this run for a loss.
Run this on early downs (1st and 10 or 2nd and short) when you want to establish tempo and set up outside runs later in the set. Check the box count pre-snap: if the defense has stacked the box with 7 or 8 defenders, this play loses value fast, so audible to a play-action shot like PA Cntr Shot Post to punish overcommitted linebackers. Use manual control on the HB after the handoff so you can decide between the A gap crease or bouncing outside if the FB's block gets beaten. Pair HB Gut with Counter F in your play-calling sequence since both attack similar gaps with different blocking angles, forcing linebackers to hesitate on flow reads. Against aggressive defensive fronts that shoot gaps, mix in Flanker Drive or Slant Spacing to slow down linebacker aggression before coming back to Gut.