The JDFB 4-2-5 Defense System has worked for thousands of high school and youth football coaches because it is simple and adaptable. This article looks at the biggest strengths of the defense. It also dives into the biggest weaknesses of the 4-2-5 Defense System coaches need to know before installing it.

The JDFB 4-2-5 Defense System has worked for thousands of high school and youth football coaches because it is simple and adaptable. This article looks at the biggest strengths of the defense. It also dives into the biggest weaknesses of the 4-2-5 Defense System coaches need to know before installing it.

Numbers don't matter. You can call it anything you want. What matters is the underlying principles of your defense. The Umbrella Run Fits Principle is the engine all my defensive systems run on.