Blue Coverage From the 4-2-5 Defense
By Mike Nahum
Defensive Coordinator/LB Coach
David W. Butler High School (NC)
Twitter: @coachnahum60
Introduction
As a Base 4-2-5 defense, we utilize 4 down linemen, 2 linebackers, 3 safeties and 2 cornerbacks. Our front six is set separately from our back five. This simplifies the teaching to our players with the use of half-line drills. Since the ball is on the hash at least 80% of the time or more in high school, we focus on teaching from the hash the majority of the time. Our defense is field/boundary based since we declare passing strength to the field the majority of the time.
We base out of Blue coverage (Quarters concept) using split field principles. Blue coverage is a pattern match defense, which allows your players to play zone coverage with match man principles based on the route distributions. This coverage easily adjusts to handle multiple formations/motions. It allows us to handle 4 verticals and gets us in a 9-man front vs. 21P and an 8-man front vs. 20P. It also allows us to stay in safety force concepts, which simplifies our teaching as well.
For the purpose of this report, I will discuss our Blue coverage vs. 10P 2×2, 3×1 and 11P 2×2, 3×1.
20P 2×1 and Empty 3×2.
Terminology is the biggest obstacle to learning. I will simply explain our defensive terminology.
BC: Boundary Corner, Buck: Boundary Inside Linebacker, BS: Boundary Safety. These 3 players line up to the boundary/away from the passing strength.
FC: Field Corner, Mike: Field Inside Linebacker, Rover: Field Low Safety, FS: Field High Safety. These 4 players line up to the field/to the passing strength.
When the ball is in the MOF, FS declares rip/liz to the passing strength side of the formation based on the # of skill receivers.
Blue Coverage vs. 10P 2×2, 11P 2×2
Against 2 detached receivers to the field, we will play read coverage as a standard check out of Blue. FC will align with divider rules 1×7 inside leverage of #1. Our FS will align with divider rules 1×10 inside leverage of #2. Our Rover will align by game plan, but generally inside leverage of #2 at 5-7 yards deep. Mike will gap align to the field. FC/FS read the release of #2. If #2 is out before the Rover then the FC will leverage #2 and break on him when the ball is delivered. The FS will flat foot read and open to #1. The FS will gain depth and play curl/dig/post of #2. If #2/#1 are vertical past the Rover, the FS/FC lock on man. If #2 is in before the Rover, the FS will shuffle and rob the direction #2 went. The Rover will wall #2 and play #3 to the flat. The Rover is the force player. The Mike is a wall #3/MV#3 player in 2×2. He will always open to #3 and he is a spill player.
Against a pro-set to the Boundary, we will play Lock coverage as a standard check out of Blue. BC will align with divider rules 1×7 Inside Leverage of #1. The BC will play all of #1 except the shallow cross. The BS will align 2×7 outside leverage of an attached #2. The BS will play all of #2 except the shallow cross. The BS is the force player. The Buck is a Wall #2/#3 to the Flat player. The Mike is a wall #3/MV#3 player in 2×2. He will always open to #3 and he is a spill player.











Here at Brookside, our brand of the Air Raid offense mixes traditional Air Raid concepts, several RPOs and our own variation the ever-popular fast screen. Our offense is designed to get the ball out as fast as possible to our athletes in space, whether it be through speed option, toss, RPOs or fast screens. We really stress yards after catch with our receivers. Their goals are to have at least 40% of our receiving yards being after the catch (YAC).
























