2-gap

Two-gapping is a read-and-react style of defensive-line play: the lineman lines up head-up on an offensive lineman and is responsible for the gap on both sides of him. He stacks the blocker, reads which way the play is going through him, then sheds to whichever gap the ball threatens. It asks for size, strength, and discipline — you control the blocker first and chase the ball second. The opposite is one-gapping, where the lineman attacks a single assigned gap upfield and lets the play come to him.

Defined by Coach Jay Freeman — 32 years coaching the offensive and defensive line.

Related trench terms

1-gapD-Line

A defensive technique where the lineman attacks one specific gap — more aggressive and more upfield.

Stack and shedD-Line

The full run-defense sequence: take on the blocker (stack), control him, then disengage (shed) to make the tackle.

ReadD-Line

To diagnose the offensive lineman's intent — run vs. pass, direction, and scheme — as the play unfolds.

Get-offD-Line

The first step from the stance. The single biggest defensive-line weapon.

Bull rushD-Line

A power-based pass rush move — straight-line force driven into the blocker to walk him back into the QB.

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