#FMT – Zero the Mike

Double gap the Mike in a single gap scheme.

Zero the Mike

In a single-gap defense, the initial thought is to align the defender responsible for a given gap head-up in that particular gap. In theory, this makes it easy for the defender to read his keys and react to the ball aggressively. Offenses play on this alignment rule with zone blocking, particularly the zone read. As the ball snaps the offensive line steps in a certain direction, knowing that by moving the gap, the defenders will move too. In order for defenses to combat this, the defensive line and linebackers must react off each other and gap exchange. By playing off anchor points (or D-Line gaps),the defense can confuse the offense and stay one step ahead.

In a 4-3 scheme, Mike’s gap responsibility is the strong side “A” gap and the Nose occupies the weakside “A” gap. By moving the Mike to a “Zero”, or head up position on the Center, he can double gap the fit while keeping his single gap integrity. Couple this by aligning the Nose in a 2i, or “G” technique, the Mike and Nose can play off each other, creating an advantage for the defense. Many 4-3 teams shade their Nose, but by putting him in a 2i it stresses the offense line. In a zone scheme, a 2i can wreck havoc if his main key is the center.

.01 4-3 Alignment
4-3 Over Front with a “zeroed” Mike and a “G” technique Nose.

Exchanging Gaps

At the snap of the ball, the Mike will always take a step to his main gap, the strong side “A”. In a gap exchange scheme, the Nose will push vertical in the weakside “A”, and react off the Center. If the Center steps to the Nose, he will hold his gap and the Mike will insert himself in the strong side “A” against the run.

If the Center steps away from the “G”, the Nose will chase off the backside of the Center, essentially taking responsibility for the strong side “A”. This allows the Mike to rock back to the weakside “A” and stressing the weak side Guard because his technique tells him to latch on to anyone head up to outside. In theory, the weak side Guard will push, or chase, the Nose to the opposite “A”. The Center will have over played the Mike, leaving him free to fill the weakside “A”, and hopefully, make a 1-on-1 tackle. This technique is referred to as a “Belly Key.”

.02 Belly Key

Here is a look at how Baylor plays with gap exchanges against zone blocking. Watch how aggressive both inside linebackers can be to the ball while being patient and allowing the defensive line to clear out the mess in front of them. This technique allows the ILBs to become unblockable because the offensive line cannot climb to the next level.

//giphy.com/embed/gnLuO5Ube0aR2

via GIPHY

Conclusion

By “zeroing” the Mike, and aligning the Nose in a 2i, the defense can double gap the “A’s” and create havoc to an offense’s zone scheme. In the run game, a defense always wants to create plus 1 situations. Aligning the Nose in a “G” allows him to read the Center and either hold his gap, or close down the opposite “A”. Anytime the Mike sees the Nose flash in front of him he adjusts his steps and attacks the opposite gap. The “Belly Key” can be a nice addition to any defense that sees a lot of zone blocking.


** To note, offenses can counteract this by running a “Bang” or man/zone scheme. In this play, the Center “bangs” the shoulder of the 2i, hopefully knocking him off balance and giving time for the weak side Guard to overtake. The Center then sifts to the Mike and blocks him according to his departure angle. The back tries to hit the hole off the Center’s backside. **
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