This week in spread zealotry we've got an example of something you can't do against the spread without getting a face full of Denard: crash. It's second and three early in the third quarter. Fitzgerald Toussaint has just taken an iso seven yards thanks to Molk and Hopkins making quick work of the NT and MLB.
Michigan will run an inside zone from an ace set. I'm pretty sure that Michigan screwed this up because I've never seen an inside zone play on which a guy who is not the end man on the line scrimmage is let go unless he's getting read. Here the backside DE is let go while Watson flares out to block a guy with a longer path to the ballcarrier.
Get used to both halves of this. Iowa is in a 4-3 under. The key guy is the DE at the top of the screen—the guy in a two point stance next to the standing SLB.
Michigan runs an inside zone. They double the NT and the SDE (at the bottom of the screen) as the linebackers flow to the LOS.
By the handoff point a couple things have happened. Both linebackers are at the LOS and engaged; the MLB is actually doubled by Lewan and Schofield. Sometimes a doubled LB means you've blocked a play so well that there's no one else to get. Not so much here.
I don't want to make too much of this because this is clearly a bust by the line (in all likelihood Lewan), but when I saw this I immediately wished Michigan was in the shotgun and Denard was reading the guy they let go. He'd have two choices: remain responsible on Denard and open that cutback up (he'd likely recover in time to tackle but not at the LOS) or do what he's doing now and put Denard one on one with the safety.
Similarly, with the linebackers one and two yards off the LOS, a pass like the one that started off their second hurry-up drive would be open. These things are all possible if you're reading the guy you've let go.
When you're not he just tackles you.
Toussaint does make the guy miss, but only by redirecting into a pile of bodies. He gets a yard. On the next play Michigan runs a QB power with Denard that Iowa is all over until two guys fall down after beating their blockers to the spot. Twenty two yards later they've got a first down. A field goal results.
Items of Interest
This seems strictly less effective than the same thing run from the gun. I'm not sure what the advantage of operating from under center on this can be. You hear a lot about getting downhill quickly as an advantage of playing from under center, but pistol sets and even Michigan's old belly setup where the QB is a yard in front of the tailback get guys going downhill pretty damn fast without giving up the mesh read.
The other advantage suggested by commenters when I tried to answer some guy's question about the advantages of the I-Form over the spread was an ability to keep your eyes on the coverage downfield instead of catching a shotgun snap*. Here Robinson turns his back to the defense and has no idea what's going on behind him until he turns around.
So… yeah. Living in a world without post-snap reads is giving up something when your quarterback is mobile.
This is an example of the "ten man football" Borges was talking about. Even so, the play should still work for a few yards. The blocking's decidedly mediocre—in the last few frames you see a DT chucking Omameh, forcing the cutback—but the nice thing about the zone is it's hard for the defense to be right when you've got an effective cutback runner. Toussaint is that.
If the backside end actually gets blocked, Toussaint looks like he has the cutback for decent yardage. While that safety is probably going to come down and hold it to a modest gain, the first down is well within reach. Lewan busts and Michigan gets zilch. That was a theme on the day: one guy doing something wrong on these run plays and Michigan getting stuffed.
I wonder if spread stuff has a greater failure tolerance. You'd think it would because you are optioning off a potential defender and therefore get a double on someone. The alternative is forcing a safety into the box, which isn't bad.
*[Something that didn't seem particularly convincing since the shotgun is the preferred passing formation for long-yardage situations and hurry-up even in the NFL.]