Picture Pages: Iso Adaptation

Picture Pages: Iso Adaptation Comment Count

Brian September 15th, 2015 at 4:03 PM


[Bryan Fuller]

You're going to have to bear with me on the offensive UFRs this year. The last time I saw a traditional gap-blocked, regular-ol-QB offense for anything more than a one-game debacle was ten years ago. That was the first year I did UFR and most running plays of that sort were deemed "another wad of bodies" because I didn't know what I was looking at. Since then:

  • Two years of Debord running almost nothing but outside zone
  • Three years of Rodriguez running inside and outside zone with a little power frippery
  • Two years of Hoke trying to shoehorn Denard Robinson into a pro-style offense, giving up, and running a low-rent spread offense
  • Al Borges's Cheesecake Factory offense that ran everything terribly
  • Doug Nussmeier's inside zone-based offense.

I've seen plenty of power plays. Most of them were constraints that could  be run simply and still succeed because the offense's backbone was something else. The rest were so miserably executed that they offered no knowledge about what power is actually supposed to look like. I watched a bunch of Stanford but not in the kind of detail I get down to with the UFRs.

fbz3gg1_thumb[1]One thing that I am pretty sure I think is that the popular conception of power as a decision-free zone in which moving guys off the ball gets you yards is incomplete. Defenses will show you a front pre-snap. You will make blocking decisions based on that front. Then the defense will blitz and slant to foul your decisions and remove the gap you want to hit. If you do not adjust to what is happening in front of you then you run into bodies and everyone is sad.

What Stanford was great at was running power that was executed so consistently well that it was largely impervious to all the games defenses played. This requires linemen who are downblocking to think on their feet, maintain their balance, and stay attached to guys who may be going in directions they were not expected to. It requires everyone off the line of scrimmage (tailback, fullback, pulling G) to see what's in front of them and adjust accordingly.

Michigan did a bad job of this against Utah. They also got blown backwards too much, complicating decisions for the backfield. The latter was not a problem against a much weaker Oregon State outfit. The former was much better, and that's the most encouraging thing to take from this game.

Here's an example. It's a six yard run in the first quarter on which Oregon State sends a blitz that Michigan recognizes and thwarts. There's no puller on this play; I think it was intended to be a weakside iso that ends up looking not very much like iso because Michigan adjusts post-snap.

M comes out in an I-Form twins formation; Oregon state is in a 4-3 that shifts away from the run strength of Michigan's formation. They are also walking a DB to the line of scrimmage:


By the time Michigan snaps the ball this DB is hanging out in a zone with no eligible receiver while both WRs get guys who look to be in man coverage. This is not disguised well unless the highlighted player is Jabrill Peppers and can teleport places after the snap:


He's going to blitz and the DL is going to slant to the run strength of the line. Michigan will pick this up, and I wonder if they IDed the likelihood of this pre-snap. No way to tell, obviously.

On the snap both the FB and RB start to the weak side of the formation; you can see Erik Magnuson start to set up as if he is going to execute a kickout block on the defensive end:


With the blitz and slant from the Oregon DL that's not going to happen. Each Oregon State DL has popped into a gap. Kerridge is taking a flight path to the gap that would normally open between Magnuson and Kalis, the right guard, on a play without this blitz. Without the blitz the DE would be the force player tasked with keeping the play inside of him; Magnuson would have a relatively easy job as he and the DE mutually agreed on where he should go.

Here the DE threatens the play's intended gap. Magnuson can't do anything about that. The D mostly gets to choose what gap they go in, and it's up to the offense to roll with the punches.

Michigan does this:


A moment later Magnuson has changed his tack from attempted kickout to an attempt to laterally displace the DE using his own momentum. Kerridge has abandoned the idea of hitting the weakside B gap and is flaring out for the blitzer.



Now, this could be successful for Oregon State still. The slant got five Michigan OL to block four guys. Nobody got downfield; the slant got a 2 for 1. But their MLB has stood stock still for much of this play, and Magnuson ends up shoving his dude past the hash mark—+1, sir. This is a ton of space to shut down, and De'Veon Smith is the kind of back that can plow through you for YAC.


Smith fends off the linebacker with a stiffarm and starts gaining yardage outside; it could be a good deal more but Chesson misses a cut* and the DB forces it back, creating a big ol' pile:


Second and four sounds a lot better than second and eleven.

*[Drake Harris will later pick up a 15-yard penalty for a similar, but more successful cut block; the genesis of that flag is probably Gary Andersen doing some screaming at the official after this play.]



Items of interest

You don't get to pick the gap even if it's gap blocking. Defenses slant constantly, and often in a specific effort to foul the intended hole and pop the back out into a place where an unblocked guy can hit. Post-snap adaptation is a must for a well-oiled power running game.

Slants win if they suck away an extra blocker. I would be peeved at the MLB if I was Oregon State UFR guy. While Michigan adapts to the slant well enough to provide a crease for Smith, the blitz means Michigan had to spend a blocker on the defensive back and the MLB is a free hitter. He should be moving to this more quickly than he does.

Slants also tend to open up giant running gaps. Adjustments like the above will often lead to a defender running in one direction suddenly getting unwanted help from an OL. If the OL can redirect and latch on just about everyone is going for a ride here. Once Magnuson locks on and Kerridge targets the DB these are two blocks that are easy to win and Smith is going to have a truck lane.

Given how much space Smith has even a linebacker playing this aggressively who shows up in the gap might lose or get his tackle run through; Michigan's getting yards here, whether it's three or six or more if Chesson gets a good block.

In the past this site has seen arguments about whether meeting an unblocked safety at or near the line of scrimmage is a win for the offense or the defense. I have largely come down on the side of "that absolutely sucks," but when the hole is so big that the defender is attempting to make an open-field tackle it's a lot more appealing.

Michigan WRs need to be more careful with the cut blocks. You can cut a guy from the "front," by which the NCAA means the area from 10 to 2 on a clock. (Seriously, that's the way it's defined in the rulebook.) This was very close to a flag, and Michigan got one later.

I wish Michigan was running pop passes, as those are good ways to get defensive backs hesitant about running hard after plays like this. Maybe in a bit.


Picture Pages: Folding Back

Picture Pages: Folding Back Comment Count

Brian October 1st, 2013 at 10:28 AM

fbz3gg1_thumb[1]This space mentions all the time that in Mattison's defense the usual end/tackle distinction for the four guys on the defensive line is not a good representation of how similar or interchangeable those guys are. The nose stands alone; the SDE and 3TECH are kind of the same player, and the WDE and SAM are kind of the same player.

A primary reason for this is that Michigan runs a ton of defensive plays on which the SDE/3T and WDE/SAM switch roles. These are so common that they have a mascot around these parts: Slanty The Gecko, who was inexplicably the first Google hit for "line slant football" a ways back. This is another Slanty post.

I've covered this ground before, but to reiterate: a slant is an aggressive defense designed to get penetration as offensive linemen are surprised  by the gap the defender tries to fill. This can lead to unblocked defenders—and big cutback lanes. Unless the offensive line makes the on-the-fly adjustment they lose a blocking angle at best, and then you've got a free hitter… as long as your linebackers understand what's going on in front of them and present themselves at the spot they should.

I'm revisiting this because the UConn game provided a look at what happens to the WDE when the playcall asks him to become the SAM. Both of these plays are Frank Clark-centric; as is often the case, this means one is good, one is bad.

The Good Part

First quarter, second and four on the UConn 29. they come out in four-wide. Michigan shows five in the box with linebackers over the slots.


That safety is a bit of a giveaway that Michigan will bring Beyer off the edge.

On the snap, Michigan does send Beyer; simultaneously UConn sends a slot guy in motion, threatening a jet sweep.

line-shift-2 - Copy

One of the primary goals with a slant is to confuse an offensive lineman expecting one assignment executing that either against air or a guy who he really can't block. Here that's going to be the right tackle. Henry, our last arrow to the bottom of the screen, is going to head outside immediately on the right guard; he needs to get upfield and be the force player.

Clark will "fold" back after taking a step past the line of scrimmage to get the right tackle to commit.

[After THE JUMP: it's like origami except someone gets buried at the end.]


Picture Pages: Short Yardage Slant

Picture Pages: Short Yardage Slant Comment Count

Brian October 17th, 2012 at 12:38 PM

fbz3gg[1]wsg Slanty, the football-playing, jean-vested gecko who is inexplicably the first hit in Google images for "line slant football", or at least was a year ago.

One of my main concerns going into the season was what would happen to the short-yardage defense that Michigan was so good in a year ago without Mike Martin and RVB. Turning a third and short into a punt is 50% of a turnover, and Michigan could paper over a lot of deficiencies last year by telling Mike Martin to destroy some guys on third and one, thus allowing other guys to tackle.

Illinois disclaimers are in full effect—they can't do anything against anyone—but the Illini could do even less of anything against Michigan Saturday, and getting bombed on short yardage was a major part of that.

Michigan blew up Illinois short yardage with slants. Multiple times we saw this pattern:

  1. Michigan slants away from a power run.
  2. The playside end gets inside and upfield of the tackle or end trying to block down on him.
  3. The pulling guard bangs into the playside end.
  4. Linebackers profit.

Actually, Michigan doesn't so much "slant away" as show one defense and run another. When Michigan isn't running their base 4-3 under call they are inverting it by blitzing Ryan and moving everyone else over a gap.

Let's see it in action. /fishduck'd

It's fourth and one on the second and final Illini drive to make it past midfield, just before the half. Michigan has just stoned a power run by Riley O'Toole for a half yard to set up this opportunity. Illinois comes out in one of their standard sets, a pistol with two tight ends to one side of the line and twinned WRs.

Michigan is in an over this time since the strength is to the boundary, but Illinois will move a tight end over and not have an unbalanced strength on the line on the snap anyway so whatever.


This is what Michigan does:


They're essentially moving everyone over a a gap and dropping Ojemudia into a short zone. On run plays he "folds" which consists of backing off, keep an eye out for cutbacks, and allowing the linebackers to run to the frontside. If you're watching a replay and are wondering if Michigan's doing this gap-shift thing, the WDE backing off the LOS is a sure tip. If you watch for it, you will find it—Michigan runs this on upwards of 20% of downs.

On the snap, Ojemudia backs off and the line shoots down. Gordon, who is right behind Ojemudia in the above frame, has followed the TE across the field and now takes contain responsibility to the playside.


You can see the slant better from this angle:


Campbell is now attacking outside the left tackle, like he's a WDE. Roh and Ryan both shoot gaps to the inside. They get penetration, giving up an outside crease to do so.


Ryan gets under fast. He's essentially through clean, so the pulling G has no choice but to pick him off. Demens is already a yard off the LOS and charging as the handoff is made.


Now it's all about tackling.





Demens went inside out here as the back tried to go north and south on fourth and inches. That allows him to use the pile as help, and look at Desmond Morgan popping up to say hi/clean up any messes.

If you take a second look at this frame:


Note how Morgan is also clean and has stepped playside as the slant develops. He's still trying to check for any potential cutbacks and find the gap he's going to fill; he is available if the back makes Demens miss or threatens to power to the line.


[After THE JUMP: play it sort of again, Sam.]


Mailbag: Unbalanced Lines, Turkmenistan, The Nature And Purpose Of Slanting

Mailbag: Unbalanced Lines, Turkmenistan, The Nature And Purpose Of Slanting Comment Count

Brian September 7th, 2012 at 10:58 AM

In re: "who are you optioning?"

This is a weird formation, right?  Lewan is eligible receiver, Kwiatkowski is not?

It's a little weird. Neither Lewan or Kwiatkowski are eligible in that formation. Lewan wears an ineligible number; Kwiatkowski is covered up by a receiver outside of him. I call these formations "unbalanced" when I talk about them.

They're not that weird, though. Teams do it to screw with the defense's alignment, test various things, etc. If the play ends up being a pass you've declared that you've only got four receivers, but since the tight end can pass block you're still playing 11 on 11.

Occasionally you'll see Michigan line up with two receivers on the line of scrimmage to the same side. This drives me nuts since the slot guy may as well not exist. This was more common under Rodriguez but IIRC Borges did do it a couple times last year. These are always runs, and usually short ones if the defense notices the alignment, which it seems like they always do.

Why do coaches do this? They're trying to mess up a defense's alignment keys and get easy yards. It's the same principle at work whenever a wide receiver lines up at fullback and motions out to the flank, or when a running back ends up lined up way on the outside.


welcome to turkmenistan

Join our flaming crater!

What effect do you think the 'Bama game will have on recruiting? Much to my surprise many fans think neutral or positive.

Peter F

I don't think it will have much, if any. Michigan's down to a couple of scholarships in the next class. By the time the 2014 kids start committing in numbers, Michigan will have played 12-13 additional games and the Alabama debacle will be a lot less relevant than it seems right now.

If it's going to hurt, it'll be with Derrick Green and LaQuon Treadwell. I don't think anyone was optimistic about Green after Auburn popped up even before Saturday; Treadwell is more of a mystery. We'll see.

In general, short-term results are not the be all and end-all in recruiting. See Charlie Weis, Ron Zook, etc. You either have it until such point as your job is under threat or you're at Kansas, or you don't.

An update on the Stubhub thing.

Hi Brian,

Just a quick heads up that UM still appears to have their relationship in place with StubHub.  I received an email on Friday from the Michigan Ticket Office proclaiming, “Don't forget to use our online Marketplace (in its second successful year in service) to easily resell your tickets electronically.”  I know you mused about whether this relationship was still in place after StubHub referred to UM as a former partner, so I wanted to pass along.

Take care,


False alarm. Still amazed at that MBA who managed to make counterfeit tickets incredibly easy to manufacture unless you were selling through Stubhub. Probably laughing moooooohahahahaha right now in a lair somewhere.

fbz3gg[1]Inversion. Also, this section sponsored by Slanty the Gecko, inexplicably the first hit in Google Images for "line slant football," or at least it was a year ago.

Steve Sharik, a former high school who you may remember posting some great diaries a couple years back, sent me an email about what happened to the defense; I responded with a question, and he answered. So let's put me in a yellow box:

It looks like Michigan is slanting the DL a lot to get their guys in gaps between the massive OL and set up an obvious cutback lane in which the LBs are supposed to be 2v1, but rarely do both of them get there. It's so consistent that it almost seems like I have to be wrong. I want the LBs to absolutely tear ass for the gap behind the slanting DT (usually they leave the DE to contain the backside). Instead they check up for cutbacks constantly that seem like the DL's job. Am I crazy?



Slanting does two things to zone blocking:

  1. If I'm an OL zone blocking to the right, and the guy on my outside who I'm supposed to block goes left, there is a natural tendency to go after my guy.
  2. More importantly, slanting the DL gets penetration, which wreaks havoc on zone blocking.

Recall how effectively OSU slanted against us in 2007 (yes, that screen shot).


the most infamous

What would continually happen was the ball would show in a hole a LB was supposed to fill, which was done fine, but the hole was created so well that there essentially are two gaps where there was once one: there is space on both sides of the lead blocker, so the filling LB has to pick one, meaning the extra LB/S/C has to fill the other one. Consistently this second, unblocked defender was late and too far away, creating a seam in the run defense.

[ED: This came up last year too. I complained about Brandin Hawthorne not getting past a blocker against EMU. Michigan has been short on free hitters.]

BONUS: we also had a discussion on that seam route Alabama hit early and Floyd tackled immediately on. I am still in a yellow box.

Sharik: Even the normally reliable Kovacs was bad.  Demens was in the wrong gap a few times, Morgan doesn't have a great feel for when to attack now or where to fit, and Kovacs and JT Floyd were very tentative.  In other words, our extra run defender (when the QB is turning around and handing it off, they're playing 10 v. 11, so we should have an extra, unblocked defender vs. the run) was late to the party or in the wrong gap, creating the huge seams you saw.  Even vs. the pass, on their conversion on a 3rd and long, Kovacs went to wide and too aggressively to re-route a seam, and ended up being outside the numbers and too close to the LOS, thereby giving up the seam right behind him.

I caught that Kovacs thing, but thought the problem there was a crappy chuck on the guy. If he really jams him there the blitz should have time to get there or Floyd has time to get over. yes/no?

Against the pass, the defender responsible for the seam must stay on that seam--reroute the receiver off the seam.  You do this with both your horizontal and vertical position.  When Kovacs was so aggressive he took himself outside of the seam and stayed too close to the LOS, creating an open window for the seam.  The technique is to not gear up to hit the guy, but to shock, catch, and run.  If a guy is running in the seam, it almost looks like man coverage if the defender is playing his technique correctly.  (Actually it does look like man, the way to tell man or zone is by what other defenders are doing.)  Also, Floyd can't come over b/c he has deep 1/3 and the outside receiver was running a go route.

If Kovacs stays in the seam window, he doesn't have to take his eyes off the QB and he can eliminate the possibility of a throw without touching the WR.  And if their QB holds the ball b/c the seam isn't open, the blitz gets home (or at least has a better chance).

Actually, I think the designed route was an inside skinny; designed to be behind the Mike and in front of the Free.  The WRs job is to clear the seam defender, then post to the middle at about 10-15.  (Different coaches teach different depths, and different defenses command slightly different depths, as well as the drop of the QB--3, 5, 7 step.)


I am now out of a yellow box. When Steve mentioned that the slot defender on the seam often looks like man coverage, it made me think back to Courtney Avery consistently carrying receivers deep on similar routes, and wondering if that was what the intent was. We eventually figured it was—this was a BWS debate—and then last year Mattison flat out said so after Avery carried a seam route deep and Iowa got a 44-yard gain out of a simple crossing route; we asked what happened there and he said Countess got out of position.

Thanks to Steve for the input. Long way to go.


Picture Pages: Slanting Against Power

Picture Pages: Slanting Against Power Comment Count

Brian October 25th, 2011 at 12:05 PM

Picture Pages on a bye week? Sure. I generally take more snapshots than I can reasonably cram into one week of posting what with all the other whatnot that goes on in this space, so this is a perfect spot for some reheated leftovers.

Yesterday I tagged Whoever at WLB as one of the main trouble spots on the defense; last week I criticized the linebackers for a particular Edwin Baker run that popped big despite Michigan seemingly having it covered. I caught some criticism myself for not being harsh enough with Mike Martin on that particular play that I'm still not sure about.

In any case, I pick the individual plays after the game (or season) has developed enough for me to identify a trend, and I grabbed that specifically because of the WTF behavior of the linebackers. Here's a play from earlier in the season that got in my thought processes and may have compelled me to pull that baby out of the bathwater. Metaphors not guaranteed.


It's late against Eastern. The starters are still mostly in; the Eagles have been driving a bit. It's first and ten. They'll run a power play to the strong side of their formation*. Michigan is in their usual under.

*[People have told me this is a "Down G", not a Power O, because the guard blocks down—I see what you did there—and it's actually a frontside tackle pulling, along with the center.]


Ryan to bottom of screen, Frank Clark to top.

The key guy to watch is Hawthorne, who is the topmost of the MLBs.

On the snap everything happens!


By this I mean three things.

  1. the center pulls
  2. the frontside tackle pulls
  3. Michigan slants away from the play

You can see the entire line headed inside away from the playside. Brink, Ryan, Martin: all are oblivious to the idea of containment. This is fine.


wsg Slanty, the football-playing, jean-vested gecko who is inexplicably the first hit in Google images for "line slant football."

Why do it? To get a free hitter. Your slant should make life difficult for anything run to its side. The downblocks are key in the power. They're the easy bit for the offense. If one gets beat your play is going to not work very well. In all likelihood your pullers are going to take defensive linemen in the backfield, leaving linebackers free to run up and smash face.

If the opponent runs away from your slant it should be okay because the linebackers know there's a slant on and can chase playside as soon as the offense gives any indication there is a playside. This gets the backside tackle/guard/whoever—the guy assigned to the WLB—blocking air. The WLB gets to scrape down the line to tackle.

This gets the backside tackle… guard… whoever…


…blocking air…


…awww, come on, Hawthorne.


In the wider view you can see huge numbers of players on the backside:


Cutback == doom. Hawthorne has no responsibility but to get down the line to the POA. Note the difference in the disposition of the linebackers. Demens is hauling for the frontside; Hawthorne is in full block-catching mode.

Now, Michigan's D can bottle this up without needing a WLB if Ryan gets a two for one on these pullers. He's the guy currently inside of #68. The other puller is running right by him. He's already given up the bounce because of the slant; if he gets into the other blocker Demens has a free run.

Ryan doesn't. He gets knocked to the inside and pancaked, which erases backside help. The other puller gets out on Demens:


Demens has maintained outside leverage, forcing it back to his help, which is three yards downfield and getting farther away.


First down on a basic power run.



Hesitation is a killer here and it does not seem explicable. Hawthorne does not quite know what he's doing yet, especially earlier in the season. The hesitation gets a little more explicable when you look at the previous play, when one Brandin Hawthorne got burned on a counter:

Even so, with the line slanting in front of him he should know to take off playside at any hint of a pull or any hint of a guy releasing to block him. Slanting should make LB decision processes easy.

This play is one of the archetypical examples of why the WLB is hard to block and can get away with being a slight fast guy… so don't get blocked.

This is especially bad for a player like Hawthorne. Hawthorne looks like Leo Messi out there. He has a hard time getting off blocks and has basically no chance if he's not thundering at whoever is coming out to block him. At least in that situation his momentum can pop the guy back and he can come off to tackle. He's done if he pulls the [REDACTED] Memorial Block Catching Dance.

Ryan missed an opportunity to MAKE PLAYS. The other thing a slant like this can do is take the playside DE/LB and make two guys block him. You see Ryan dive inside the first puller. This means the RB is going to bounce, which means Ryan's basically done. Also done is Ryan's blocker.

Ryan has one way to impact the play left: try to pick off that other puller, leaving Demens unimpeded on the edge. Here he takes the block and appears to try to fight back outside, which ends with him in a heap. This isn't the worst thing in the world but great defenses that swarm these kinds of plays with two guys get both the 2-for-1 and the WLB in the hole.

This is one of the reasons I'm looking owlishly at the WLB whenever something goes wrong. Picture Pages are attempts to thematically summarize trends I see as I'm UFRing, so when I pull a play to illustrate something it is a complaint/credit I've seen quite a bit of. That may mean I focus on the linebackers on a particular play that may or may not be Mike Martin's fault for not shedding his guy and tackling for loss.

Google images can be weird sometimes.