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Why Your Defense Can’t Tackle in Space (Fix It With This Progression)

August 18, 2026 by

AJ Cooper, LB Coach, Arizona State

This video was originally posted on Glazier Connect.

It is a segment of a content video from Glazier Drive:  LB Tackling Progression

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OVERVIEW

This video breaks down Arizona State’s linebacker tackling progression, using a “backward teaching” approach — starting players in the fit/contact position first to build confidence and feel, then gradually working them backward into full-speed, in-space tackling.

PHASE 1: FIT POSITION PROGRESSION

Players start already in the tackling fit position with their face already on contact, emphasizing near foot up, same foot/same shoulder, and an exaggerated “uppercut” arm swing while driving their feet for five steps. The coaching cue is “get a leg, take a leg” (squeezing and lifting the ball carrier’s leg). From there, the drill backs players up incrementally — one step into contact, then two steps into contact — while keeping all the same fundamentals: same foot/same shoulder, face centered on the near hip/near number, and driving through contact for five steps.

PHASE 2: TACKLING IN SPACE (SEVEN CONE DRILL)

Designed to simulate open-field tackling. Linebackers must take away space, keep leverage, and force the ball carrier in one direction while staying inside-out and avoiding a head-up position (which gives the ball carrier a three-way go). Starts as a non-contact drill with one player as the “linebacker” and one as the “ball carrier,” working the same collision point, footwork, and leverage principles.

PHASE 3: ADDING AN AGILITY BAG (SPEED/GATOR TACKLING)

Once pads are on, an agility bag is added to mimic speed tackles — the kind needed on screens, bubbles, and stretch plays. Players work to stay inside-out and track to the near hip/near number, a technique also called a “gator tackle” or “roll tackle.”

PHASE 4: ADDING A “CRASH MAN”

A blocker/crash defender is added to increase realism. The focus stays on loading up the strike (uppercuts or palms down, based on player preference) and finishing with proper near hip/near number contact.

PHASE 5: COMBINING DRILLS IN SPACE (“REVERSE L”)

Players now work around a cone in a reverse-L shape, combining the earlier fit and space-tackling drills. Coaching points include closing distance quickly, breaking down properly, keeping hips and shoulders square on contact, and avoiding getting too wide or head-up on the ball carrier.

PHASE 6: LIVE TEAM PERIODS

Arizona State runs live tackling at least once per week during the season. The coach reviews game-speed reps (jet sweeps, gap schemes) showing linebackers matching the ball carrier’s path, staying inside-out, closing ground, and executing the same near hip/near number technique taught in the drills — while acknowledging that in live football, technique won’t always be picture-perfect.

PHASE 7: GAME FILM APPLICATION

The video closes with real game clips (quarterback scrambles, tackles in space) showing the direct carryover from the drill progression — players closing distance aggressively, taking good angles, and finishing tackles using the same speed-tackle and gator-tackle mechanics developed in practice.

KEY TAKEAWAY FOR COACHES

The progression is built to move from controlled, confidence-building contact to fully live, game-speed tackling — with each drill reinforcing the same core fundamentals: same foot/same shoulder, near hip/near number, staying inside-out, and avoiding head-up contact.

Filed Under: Defense

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