4-3 Over
Strong-side shade, 1-tech nose
The 4-3 Over shifts the defensive line strength toward the offense's strong side. The 3-technique tackle aligns to the strong side of the formation, while the 1-technique nose shades the weak A-gap. This creates a natural strong-side run fit and gives the MIKE linebacker a clean read through the weak-side A-gap. It remains one of the most versatile and balanced fronts in football.
Player Assignments
Set the edge on the weak side. Contain the quarterback on bootlegs and play-action away from strength. Must hold C-gap integrity before pursuing.
Shade the center to the weak side, controlling the weak A-gap. Must occupy the center and weak guard to keep the MIKE linebacker clean.
Primary interior pass rusher. Aligned on the outside shoulder of the strong guard, penetrating the B-gap. Creates disruption in the backfield on run and pass.
Strong-side end aligned outside the tight end. Sets the edge on strong-side runs and is a primary contain rusher on pass plays.
Force player to the strong side. Responsible for the tight end in coverage, strong-side contain on runs, and setting the edge when the DE crashes inside.
The quarterback of the defense. Reads the offensive line flow to fill the appropriate gap. In pass coverage, handles the middle hook/curl zone or matches a back.
Fast-flow linebacker. Must scrape over the top to the strong side on strong runs, or fill the weak B-gap on weak-side runs. Best coverage linebacker of the three.
Strengths
- • Balanced against both run and pass
- • Creates a natural strong-side run fit with the 3-tech and SAM
- • Keeps the MIKE clean to read and flow to the ball
- • Versatile enough to pair with almost any coverage
Weaknesses
- • Weak-side A-gap can be vulnerable if the 1-tech gets washed
- • Only 7 men in the box limits run support against heavy formations
- • SAM must be athletic enough to cover tight ends in pass situations