Mills Concept

mills concept

The Mills concept creates two high-low reads to put the deep safeties and linebackers in conflict. Whether it’s run at two safeties or one, it works to tempt players up to open space behind them.

Read More: Sail Concept

Mills Concept + Assignments

The Mills concept consists of two primary routes and is usually run with a third supplementary route underneath. As long as these two routes are run next to each other, it’s considered the Mills concept:

  • A post from the outside receiver
  • A 10-12 yard dig from the inside receiver

To supplement that combination, a shallow drag is usually run by a receiver on the opposite side of the formation.

mills concept
The Mills Concept: A post by #1, a dig by #2, and a shallow from the other side of the formation

The dig is designed to tempt the play-side safety to come up. That vacates the middle of the field behind them for the post. A lot of teams use it to attack quarters coverage or two-high looks, but Mills is effective against single safety looks as well. To work against those one-high looks, though, you need someone with a little more speed on the dig to be able to get in front of the middle of the field more quickly and pull the safety up.

Read More: Dagger Concept

mills concept
The Mills concept combined with the Drive concept in trips

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Coverage Read for Mills

The Mills concept creates two separate high-low reads:

  • Between the dig and the post which attacks the safety
  • Between the drag and the dig which exploits linebackers

A lot of teams like this play against Cover 4 because it can force the play-side safety to come up on the dig. That leaves the corner with outside leverage and the opposite safety too far away to make a play.

post read mills concept

That’s exactly what happens to the Packers here. Matt Ryan is reading the play-side safety to the top of the screen. As soon as he comes down on the dig, the post is open over the top for a touchdown.

Read More: Anatomy of a Play: The Packers 3rd and Goal vs. the Bucs

The Titans also hit the deep post on Mills here to set up a game-winning field goal vs. a Cover 4 look.

Read More: Anatomy of a Play: The Tennessee Titans’ division-clinching deep shot

Conversely, when the safety stays on top of the post in the middle of the field, that opens up the dig underneath if the linebackers are pulled up on play-action or by the shallow drag.

The quarterback has a couple things he needs to do on this play:

  1. Identify the coverage for an alert to the post
  2. Read the safety on the high-low for the post/dig
  3. Read the linebackers on the high-low for the dig/shallow

When linebackers get depth and carry the dig upfield to help take away that window, that vacates the underneath area for the drag coming across the field. If there’s green grass in front him, the receiver will continue to run across the field. If it’s zone, he’ll settle in the soft spot on the opposite side of the formation. The Raiders get depth under the dig and the pressure gets home before Rivers has a chance to load up for the post. That forces the ball to go underneath to the drag.

Read More: Stick Concept


The Mills concept is versatile in its ability to attack deep safeties and underneath defenders. Depending on the philosophy of the offense and how teams treat the post, it can be a high percentage play underneath with a great opportunity for a huge gain over the top.