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Trench Dictionary · D-Line

3-technique

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

Also called: 3 technique, three technique, 3-tech, under tackle

Technique numbers tell a defensive lineman exactly where to line up on the blocker: even numbers head-up, odd numbers on a shoulder. The 3-technique lives on the guard's outside shoulder with one job description — penetrate the B gap and wreck plays behind the line. It's the glamour spot of the interior because it's built for one-on-ones: the guard has to handle you in space, and the center usually can't help. Aaron Donald made the 3-tech the most feared alignment in football. If you're quick off the ball and win with get-off and hands, this is your home.

Related trench terms

0-technique (nose tackle)D-Line
A defensive lineman aligned head-up on the center — the nose tackle, the middle of the wall.
5-techniqueD-Line
A defensive end aligned on the tackle's outside shoulder — the classic 3-4 end spot.
A gap (gap lettering)Both sides
The gap between center and guard — first letter in the gap-lettering system that names every hole up front.
Get-offD-Line
The first step from the stance. The single biggest defensive-line weapon.
SlantD-Line
A pre-snap-called movement where the D-lineman attacks a gap to one side at the snap.

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