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 — 34 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.

3-techniqueD-Line

A defensive tackle aligned on the guard's outside shoulder — the B-gap penetrator spot.

0-technique (nose tackle)D-Line

A defensive lineman aligned head-up on the center — the nose tackle, the middle of the wall.

Go deeper

• Coach Jay’s lineman training library — the technique behind the term →
• Back to the full Trench Dictionary →
• Get the free 6-week trench training program →