Understanding the 4i Technique is critical in today’s game and has become a foundational alignment within multiple defensive structures across football.
Aligned on the inside shade of the offensive tackle, the 4i allows a defensive lineman to control the B Gap, disrupt inside zone concepts, create difficult double teams, and force offenses to adjust blocking angles and run fits.
Why the 4i is valued defensively ⬇️
✅ Controls the B Gap and interior run lanes
✅ Creates tougher combination blocks for offensive linemen
✅ Forces cutbacks and disrupts timing in the run game
✅ Creates favorable one on one opportunities
✅ Helps collapse the pocket from the interior
✅ Allows linebackers to play cleaner and faster downhill
Success within the 4i is built on discipline, leverage, violent hands, pad level, and the ability to control space at the point of attack.
Defensive linemen must understand not only where they align, but why the technique is being utilized within the structure of the defense.
Control your gap. Control the line of scrimmage. Finish the play.