Yesterday I put up an analysis of a simple iso that cut back behind Mike Martin and picked up ten yards. In the comments Magnus mentioned he thought this must be a mistake on someone's part because when you have the DT and MLB both heading to the playside A gap your defense is no longer "gap sound"—ie does not have one guy in every place a tailback can go—and things like ten yard iso plays result.
This resulted in some discussion about how the MLB's job in the 3-3-5 is to "make the nose right", IE fill the other A gap depending on what the nose does. This is a phrase unleashed to the world by Jeff Casteel's 3-3-5 DVD, and I think it's what West Virginia does with its middle linebacker. It's evidently not what Michigan is doing with Demens when he's aligned in what I've come to think of as the Gergbacker position. Demens doesn't have time to make anyone right because he's too close to the play; he picks a side of the line and goes into the guard.
Another commenter complained that I shouldn't criticize Van Bergen for getting locked out upfield on this particular play because I can't be sure what his assignment is. That's true and a frustration I often have but amongst Wisconsin's brain-melting array of second half runs there is a serendipitous iso that Michigan stops that demonstrates the trends from yesterday's post and suggests that the key guy on a cutback is indeed the backside DE.
It's first and ten on the Michigan 41 in the midst of Wisconsin's first soul-crushing ground based touchdown drive of the second half. Wisconsin comes out in the same I-form they showed on the play featured yesterday. Michigan goes with basically the same stack look as well, though they've flipped Kovacs and Avery. The backup DL (Banks, Patterson, Black) is in:
A moment after the snap we see a difference: the backside tackle is releasing downfield instead of blocking Banks out of the play. That's left to the TE. He gets slanted under:
A moment later we see that Patterson is getting playside of the center… and Demens is shooting into the same gap to take on whoever shows up. Banks is sliding down the line behind them; also note that Jibreel Black has beaten the block of the RT and is coming upfield.
At the handoff point Patterson is beating his guy and Demens is about to slam into a guard at the LOS. In doing so he halts all progress from both the G bubbled over him and the FB. Massive cutback lane would result, except Banks is right on the center's hip. Black is now through the tackle totally and converging; tailback has nowhere to go:
Wad of bodies…
…and two yards.
So. To continue the Week of Defensiveness, usually these plays are picked because they illustrate a larger trend—Kenny Demens runs at the playside guard all day and eats facemask, and I'm pretty sure the design of this defense has a backside DE assigned to an A-gap. My choice here was between criticizing Van Bergen for getting locked out so easily or Greg Robinson for putting him in a tough position. The right answer is some of both, probably.
Object lesson type objects:
- This is a slight variation on the play yesterday. Yesterday Wisconsin kept the backside T in to block Van Bergen and ended up blocking Mouton with a guard. Here the guard attempts to slide over on Patterson and the T is assigned Mouton. These seem like subtly different playcalls with the first designed to cut back and the second to go straight upfield.
- Kenny Demens really does just run to the playside A gap all game, where he enjoys a scone with the DT. Here it works, though the next play is a 12 yard Down G run, the play after a four yard power play, and the play after that a 23-yard Down G touchdown.
- So that means your options on the cutback are backside DE or no one. Here Banks gets a relatively easy task since the guy lined up over him heads downfield and he can just slide along the line; Van Bergen had that guy blocking him. Still, the results were not so good and were repeated on a number of other runs.
- I'm pretty sure this is a bad idea. And not just on general principles! Having the backside DE clean up behind the NT seems like a thing that would work in the 4-3 where the backside DE is actually a DT inside of the tackle. In this scheme he releases downfield or he's got what seems like easy work to seal out a guy who's supposed to be an A-gap player.
- How about Jibreel Black beating a block and being useful on a run play? Woo progress!