Playbooks
In 23 playbooks
Breakdown
HB Iso out of the I Form Pro set is a straight downhill power run play built around a lead blocker punching through the interior. The diagram shows the FB stepping into the hole ahead of the HB, who takes the handoff and follows the FB's block through the A or B gap while the offensive line fires out for double teams and zone step blocks up front. This is a pure run play with no route combos or play-action window dressing, so the primary read is simple: locate the FB's block, press the hole, and cut off it based on which way the defensive front collapses or gets displaced.
Defensive Reads
Watch linebacker depth pre-snap, stacked or crashing linebackers signal a run blitz that can beat the FB to the point of attack. Key the middle linebacker's first step after the snap, if he flows hard to one gap the HB should be ready to cut back off the FB's adjusted block. This play struggles against heavy run blitzes and gap-sound defenses that keep both A gaps plugged with a Mike linebacker sitting downhill. Defenses in base 4-3 or 3-4 fronts with two deep safeties tend to leave light boxes, making this an easy conversion, while eight-man fronts or run commit calls shut it down quickly. On defense, user the Mike linebacker and attack the FB's block directly to blow up the timing before the HB can decide on a lane.
Usage Tips
Use pre-snap defensive alignment to confirm the box count before the snap, if the defense has six or fewer in the box this play has a clean crease. Identify one-gap versus two-gap fronts, HB Iso hits hardest against light boxes and defenses playing base personnel that respect pass on early downs. Trust the FB's lead block and stay patient, do not commit to a lane too early since the FB may adjust his target gap based on the first threat he sees. Pair this with HB Lead Draw and HB Blast out of the same I Form Pro personnel to keep the defense guessing between quick-hitting downhill runs and delayed hits. Best used on early downs, first and second and short, or as a change of pace after running outside zone or HB Stretch to punish defenses that start flowing laterally.
