Playbooks

FB Inside

Shotgun·Split Y-Flex·21
Likely unavailable in the playbook builder
This play belongs to no NFL team or scheme playbook, so it may not appear in the in-game builder.

Quick Reference

FormationShotgun

In 1 playbook

Air Raid Classic OffenseOffense

Breakdown

FB Inside is a downhill run play out of Shotgun Split Y-Flex 21 personnel that hands the ball to the fullback on an interior blast between the guards. The offensive line executes a power or man blocking scheme, sealing the interior gaps while the fullback follows a lead blocker or reads the initial hole created by double teams up front. This is a run play designed to punish light boxes and overaggressive defensive fronts, and the primary read progression starts with the A gaps before bouncing to the B gap if a defender crashes down too early.

Defensive Reads

Watch for linebacker depth at the snap since stacked linebackers sitting tight to the line will fill the A and B gaps quickly and blow this play up. Identify whether the defense is in a base 4-3 or 3-4 front, since 3-4 fronts with two-gapping defensive ends tend to funnel the fullback into pursuit defenders more effectively. Man coverage shells with off-ball linebackers biting on run action can be exploited if you fake this look and later run a play-action rollout from the same personnel and formation. Look for safeties crashing down into the box pre-snap, which signals run blitz intent and should make you consider an audible into a pass concept like Y Cross or Flood instead. Nano blitzes or edge pressure designed to beat Shotgun run blocking will show as a defensive end or outside linebacker crashing hard inside before the snap, so check your protection assignments and be ready to bounce the run outside if that happens.

Usage Tips

Check the box count before the snap and only run FB Inside into 6 or fewer defenders in the box to avoid getting stacked up for a loss. Use this play on short yardage or 2nd and short situations where defenses expect a pass out of Shotgun personnel, since the fullback dive catches nickel and dime packages off guard. Pair FB Inside with HB Draw and Read Option in your play-calling sequence so defenses cannot key on Shotgun run tendencies out of this personnel. If the defense shows a heavy blitz look pre-snap, consider hot routing the fullback to the flat as a check valve instead of forcing the run into a stacked box. User the fullback manually through the hole to make one cut and truck through arm tackles rather than dancing behind the line, since this play thrives on north-south decisiveness.

Other Plays in Split Y-Flex