Install 8: 4-2-5 Defense versus Empty sets

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We’re going to take a look at “spread” formations, and how we adjust to Empty Sets in 3×2 alignment. We can use two main methods against the Empty set jokers that are our Stack and our Hokie fronts.


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Against empty, depending on the goal of the team, we can stick to our even front and run Hokie robber 4 in a split-field coverage.

As you can see, we’re robber’ing the trips side playing the SAM over the #2. His responsibility is the flat, while the CB has that off and inside leverage for wheels and verts. The safety then plays the apex (6 off and between #3 and the EMOL). On the 2 receiver side, the CB plays outside leverage and 5 off the #1, while the safety plays stacked at 5-6 yards off the #2.

hokie robber 4 vs empty.png

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We can also call Stack if we’re looking to squash RPO’s, screens, 5-outs, and arrows. In Stack we can double robber their #2 threats on each side of the split-field coverage. Our strength aligns to the trips and for our D-Line they slant to the trips.

stack robber vs empty.png

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1 thought on “Install 8: 4-2-5 Defense versus Empty sets

  1. Pingback: Install 8: The IMFB 4-2-5 Defense | Ironman Football

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