Outside Zone
Stretch the defense horizontally, then cut back
- Ball carrier
- Block
Outside Zone (also called "stretch") uses the same covered/uncovered zone-blocking principles as Inside Zone but with wider, more aggressive lateral first steps. The running back aims for the playside tackle's outside hip and follows a "bang, bend, bounce" progression, hitting the first crease available inside, bending back if overpursued, or bouncing to the perimeter if the defense flows too far inside. The play stretches the defense horizontally and punishes any defender who over-commits to one gap. It is the cornerstone of the Shanahan coaching tree and the foundational play of Kyle Shanahan's 49ers offense.
Blocking
5 OLTap a lineman to isolate his block.
Blocking rules
All five offensive linemen take aggressive lateral zone steps toward the playside. The aiming point for each lineman is the outside number of the playside defender. Covered linemen execute reach blocks, working to get their helmet past the defender's playside shoulder. Uncovered linemen help the ADJACENT PLAYSIDE lineman on the nearest covered DL in a combo block, then climb to the second-level linebacker. The entire line is reaching playside, there is no backside combo in OZ. The key distinction from Inside Zone is the wider first step and the emphasis on getting bodies to the playside edge. The tight end or H-back often serves as an additional playside blocker, sealing the edge defender.
Running back read
Aiming point is the playside tackle's outside hip. Follow the "bang, bend, bounce" read progression: (1) BANG, if the first crease opens inside the tackle, hit it immediately. (2) BEND, if the defense flows to the playside but the backside combo creates a cutback lane, plant and bend back to the inside gap. (3) BOUNCE, if the defense pinches inside, take the ball outside the last blocker to the perimeter. The key is patience at the mesh point and one decisive cut.
Why it works
Outside Zone forces every defender to run laterally, which spreads the defense thin and creates cutback lanes. Defenders who over-pursue get cut back behind; defenders who stay home get outnumbered at the point of attack. The horizontal stretch naturally pairs with play-action bootleg, when the backside DE chases the stretch, the QB fakes and rolls naked behind him for easy completions.
Conflict defender
Backside defensive end, must choose between chasing the play down the line (leaving the backside vulnerable to bootleg) or staying home to contain the QB rollout.
Play-action off it
1- Flood · Outside zone → bootleg/naked to the backside. The DE crashes to chase the stretch, and the QB rolls away with flood concept receivers stretching the vacated side.
Origin
The modern Outside Zone lineage runs Alex Gibbs (Broncos OL coach 1995-2003) → Mike Shanahan (Denver and the early Houston Texans) and Gary Kubiak (Denver coordinator, then Houston head coach) → Kyle Shanahan, who made it the centerpiece of the 49ers offense and turned late-round picks and undrafted free agents into 1,000-yard rushers. The cut-block-heavy wide zone is the most copied scheme in the modern NFL.
Outside Zone vs fronts
7 RATED- 4-3 OverEdge
Stretch creates lateral movement that outflanks the 4-3 over front; the back reads the C-gap and bends back inside if needed.Show reasoning
Conflict defender. Playside defensive end (reach block)
Why the offense wins. Stretch creates lateral movement that outflanks the 4-3 over front; the back reads the C-gap and bends back inside if needed.
Key adjustment. Set the edge with the DE and have the WILL scrape over the top to the outside.
- 3-4 Two-GapEdge
Full-flow stretch is the classic answer to two-gap heavies: 0- and 5-techniques built to anchor and read get put on a dead sprint, and the back cuts off their trailing leverage the moment one loses gap width.Show reasoning
Conflict defender. Playside 5-technique defensive end (two-gap)
Why the offense wins. Full-flow stretch is the classic answer to two-gap heavies: 0- and 5-techniques built to anchor and read get put on a dead sprint, and the back cuts off their trailing leverage the moment one loses gap width.
Why the defense wins. Two-gap DEs stay in their gap and force the back to cut upfield into unblocked linebackers.
Key adjustment. Have the 5-tech keep his gap width on the sprint and the inside linebacker fill the cutback.
- 3-3-5 StackEdge
Only three down linemen make it difficult to set the edge; outside zone gets to the perimeter quickly.Show reasoning
Conflict defender. WILL (stacked behind the weak DE, edge force)
Why the offense wins. Only three down linemen make it difficult to set the edge; outside zone gets to the perimeter quickly.
Key adjustment. Have the stacked WILL spill the stretch and the safety fill from the secondary.
- NickelEdge
Nickel defense is light in the box; outside zone stretches the defense to the boundary where there are fewer defenders.Show reasoning
Conflict defender. WILL linebacker (stacked weak side)
Why the offense wins. Nickel defense is light in the box; outside zone stretches the defense to the boundary where there are fewer defenders.
Key adjustment. Have the WILL scrape over the top and a safety fill the alley as the force player.
- 4-3 UnderToss-up
The 5-technique sets the edge against the reach and the WILL scrapes over the top, so the stretch has to bend back into the 3-technique and the MIKE.Show reasoning
Conflict defender. Weak-side defensive end (5-technique, reach block)
Why the offense wins. Run it weak: the 3-technique and 5-technique give clean reach angles away from the SAM, and the back's bang-bend read punishes the under front's strong-side overload.
Why the defense wins. The 5-technique sets the edge against the reach and the WILL scrapes over the top, so the stretch has to bend back into the 3-technique and the MIKE.
Key adjustment. Have the 5-tech hold the edge against the reach and the WILL scrape over the top.
- Wide-9Toss-up
The bounce is dead because the 9-tech caps the perimeter, so everything funnels back inside where the 3-tech and flowing linebackers are waiting.Show reasoning
Conflict defender. Wide-9 defensive end (capping the edge)
Why the offense wins. You don't have to reach a 9-technique; the tackle rides his upfield width and the back bends underneath him into the B/C gap the wide alignment vacated. Bang-bend-bounce is built for this.
Why the defense wins. The bounce is dead because the 9-tech caps the perimeter, so everything funnels back inside where the 3-tech and flowing linebackers are waiting.
Key adjustment. Keep the 9-tech upfield to cap the bounce and let the 3-tech and linebackers take the bend.
- 46 DefenseTough
The 46 puts eight in the box: the weak-side 5-tech sets the edge, the 3-tech is in the B gap behind him and the stacked WILL is a free hitter, so the stretch cannot outflank the front and has no cutback lane.Show reasoning
Conflict defender. Weak-side defensive end (5-technique edge)
Why the defense wins. The 46 puts eight in the box: the weak-side 5-tech sets the edge, the 3-tech is in the B gap behind him and the stacked WILL is a free hitter, so the stretch cannot outflank the front and has no cutback lane.
Key adjustment. Have the 5-tech set the edge and the stacked WILL flow over the top; the strong safety fills the alley.