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4-2-5 Defense Football Coaching Guide

The 4-2-5 is one of the more popular defenses used by defensive coordinators over the last 10 years to stop the spread offense.

The 4-2-5 defense has 4 defensive linemen, 2 linebackers, and 5 defensive backs. This defensive scheme is designed to be balanced to stop both the run and pass.

In this article, we’re going to show you how you can properly install the 4-2-5 and everything you need to know to run a successful defense.

4-2-5 Defense

The 4-2-5 Defense scheme allows defensive coordinators to be balanced in stopping the run while also having enough defensive backs on the field to cover the pass.

The scheme is unique because it puts more players into the field and uses fewer players to cover the boundary.

The term field refers to the part of the field that has more space. The boundary is the side of the field that has less space. Due to the uneven landscape of a football field, one side will always have more yardage than the other side.

What Positions Are In A 4-2-5 Defense

4 Defensive Lineman: These guys are the ones that attack the offensive line. They’re required to be quick and strong, decide what to do, and fit in with their linemen for a good push.

The defensive lineman should have a great first step and be able to use their hands well. The defensive lineman is often separated by 2 defensive ends and 2 defensive tackles.

2 Linebackers: Linebackers are usually best at playing the run, but they can also play passing downs. Linebackers must be able to bend, run and cover receivers in man coverage as well as blitzing.

They don’t need to have great pass-rushing ability, but they need speed so that when they blitz, you can throw the ball over them if needed. These two linebackers are often referred to as Sam & Mike.

5 Defensive Backs: The 5 defensive backs in the 4-2-5 defense are broken down by 2 cornerbacks, 2 safeties, and one hybrid player known as the Jack (or dollar). These players are responsible for both the run and the pass, not just covering the pass.

How To Install The 4-2-5 Defense

In this section, we’re going to show you how you can install the 4-2-5 defense. We will break down each position and give you ideas on installing it for your team best.

Defensive Line In The 4-2-5

Starting with the defensive line, you need first to determine the names of the defensive lineman. Many coaches will have a tackle and a nose for the interior lineman.

The two defensive ends can be called whatever the coach wants to call them. If the coach decides not to have a strong and weakside defensive end, then he can keep his defensive ends static.

When installing the 4-2-5, it’s important to have front names for where you want your players to align. We recommend reading this article on defensive techniques and alignments to create a baseline for your players.

The two fronts that we’re going to cover in this article are the over and under fronts. These are the two most common fronts that 4-2-5 teams will run to stop the run.

The Over & Under Front In The 4-2-5

The over front can be classified in a few different ways against spread offenses. First, if there is a tight end, the 3-technique will go to the tight end side. On the backside, teams will use a 1technique over the center or a 2i over the guard. This is completely up to the coach.

Over Front in the 4-2-5

The 3 techniques can also line up on the same side of the running back or with more receivers if there is no tight end in the formation.

The 3 technique is responsible for controlling the B gap. The 1 technique (or 2i) is responsible for controlling the A gap.

The 2 defensive ends will line up in 5 techniques outside of the offensive tackle. Both of these players are responsible for covering the C gaps.

Under front in 4-2-5

In the under front, the 3 technique will go away from the tight end or the back. This means the 1 technique will go to the side of the tight end or the back.

This is the only differentiator for the defensive front, as the defensive ends will stay in their 5-techniques and maintain control of the C gaps. Each front must be signaled in or verbalized in each play.

Linebackers In The 4-2-5 Defense.

The linebackers play a major role in the 4-2-5 defense. They are often “box” players, meaning their main goal is to stop the run and think about the pass second.

Having 5 defensive backs on the field protects the linebackers in the passing game, as they will need to primarily cover underneath receivers and don’t need to travel too far.

The linebackers in the 4-2-5 defense will be responsible for protecting the A & B gaps when the defensive front is over/under front.

The combination of the defensive line and the linebackers allows the defense to cover all 6 gaps and prevent the offense from running the ball effectively.

Defensive Backs In The 4-2-5 Defense

The 4-2-5 is unique because it utilizes the speed of 5 defensive backs. Teams typically only have 5 defensive backs on the field when they go to their nickel package.

The 4-2-5 uses a 5th defensive back on the field at all times to maintain the defense’s speed for all 4 downs.

The jack (or dollar) backer is a hybrid between a linebacker and a defensive back. Their job is to play underneath coverage but also be physical enough to play in the run game.

The two safety positions (often called strong and free safety) are more involved in the run game than any other defense.

Not only do they have the responsibility to cover the pass, but coaches will use the safeties to make tackles at the line of scrimmage once the linebackers and defensive backs plug their gaps, forcing the ball to spill.

Two cornerbacks will play typically as cornerbacks do in other defensive schemes. This is the one position that doesn’t change much throughout defensive schemes.

Coverages In The 4-2-5 Defense

coverage in the 4-2-5

Due to the fact, there are 5 defensive backs on the field, and it means that the defense must play what’s called split field coverage. This means that one side of the field will play one coverage, while the other will play a completely different coverage.

On one side of the field, teams will often play quarters coverage.

The rules for quarters coverage in the 4-2-5 are:

  • The corner will have deep 1/4
  • The safety will have deep 1/4
  • The jack will cover the flats
  • The mike linebacker will help in the middle of the field

On the other side of the field, teams will often play some cover 2. Remember, the jack will go to the field, so cover 2 will be played on the short side of the field.

The rules for cover 2 in the 4-2-5 are:

  • The cornerback will have the flats
  • The safety will have deep 1/2
  • The linebacker will support in the hook/curl zone.

Coaches can use spot drop techniques or man-matching techniques, which we further explain here:

Regardless of what you play, every play must communicate to the players on his side of the field what exactly they’re running.

Keep Learning

The 4-2-5 defense is designed to stop the run but gives the offense many different looks when they come out of the huddle. It’s a defense that can be adjusted and tweaked, depending on what your coaches want to do.

The 4-2-5 defense is inherently different from any other defensive scheme, as it has the flexibility to run different coverages on either side of the field. It’s important to create a system of communication (front, coverage) so that each player can get lined up properly.

Let’s keep learning! Our learning center is packed with information regarding technique, scheme, and more!

If you’re looking for more in-depth breakdowns & coaching resources, visit our coaching resource page here.

If you have any questions on the 4-2-5 tweet, us @vIQtorySports on Twitter. We’d love to answer any questions you may have.