So we've got ourselves a new offensive coordinator. I guess there's no use hiding that I'm on the more ambivalent end of the spectrum of Michigan fans, but I'm a spread zealot, and I admit another gorram transition is just too painful a prospect right this moment. At the very least it was the kind of PR coup that resets the countdown clock on Hoke's tenure. These days you only get to play the "it was my offensive coordinator's fault" card once per Rose Bowl trip, but this was the right time to do so. I'm probably just a cynic who's been sold a bill of Mariucci over Mornhinwheg to believe in any apparent upgrade. Let's see if the readers can convince me otherwise.
Eye of the TIger tried. He found some quotes by an ex-Bama player on how Inside Zone is repped to insanity, which can be taken as evidence of philosophical thinking, or taken as the zone version of Hoke's "Power" philosophy which admittedly never materialized under Borges anyway.
|The thing about Barrett Jones is you don't have to make tough decisions about what your OL can and can't do.|
Tiger pointed out that Alabama's riches in offensive lineman size allowed them to depart from the typical suite of complementary plays and players that limits you to. It's supposed to be this:
Inside Zone has another advantage--flexibility:
The majority of the time in a zone blocking scheme the tailback will follow the design of the play, but occasionally the tailback will perform a cutback and change direction during the run. A cutback is when the tailback changes direction and runs away from where the linebackers are flowing (the tailback can only do this once and must not hesitate). This cutback made by the tailback is what makes zone blocking so dangerous because of how easily a cutback can lead to a big play. The cutback exaggerates the advantages of the zone-blocking scheme.
Watch this video highlighting Texas’ use of Inside Zone to see this point illustrated nicely, not only for cutbacks, but for alternate read options.
Major advantages: You can run an offense with less experienced OL and opens up a bigger growth curve for RBs, who become more effective the more comfortable they get at reading the holes and cutback lanes.
Major disadvantage: It's way harder to run play-action from a zone running look. Reason is nothing gets defenders thinking run like a good running MANBALL (or inverted veer) team pulling a guard. Second reason is the small, cut-rate scatbacks that zone lets you get away with don't typically make very good pass blockers. I probably don't have to tell this to 2013 Michigan fans.
At Alabama they overcame the disadvantage by having massive/quick OL who are naturally difficult obstacles to a pass rusher, and with 5-star running backs who can cut, block, slam, juke, and jet, all for three easy payments of $3,995.95, plus shipping and handler's fee (order now and we'll throw in a free safety). At Michigan, well, actually, we've got just those kinds of guys on campus now. Maybe?
Also there's this:
@michiganinsider I think people don't realize how handcuff Nuss was at Bama, he called the plays, but Nick was in control, handcuffs are off
— Theus DeShon Sears (@Theist313) January 10, 2014
And here I am a quarter way through UFRing an Alabama game. Anyone got Washington tapes?
P.S. I purposely stayed vague on the Song of Ice and Fire references; you're not off the hook from a season recap.
[After the jump: the board goes Borges for Nuss]
I don't think I'm exaggerating. It's second and eight after one of Michigan's most successful RB runs of the night. Michigan trails 21-10 with six minutes left in the second quarter. They put some dudes on the field and move them around. When we come back from Matt Millen saying something about something, this process has already started.
Houma and Chesson are switching spots. What this is supposed to do to the defense remains unknown, because it did not happen. Now… there's something odd about this play. Since we don't ever see the outside WR, I don't remember if that's Funchess or Williams or whoever, but Michigan puts him off the screen to the field. Also…
They have no left tackle. They have put their left tackle at super right tackle.
I think this is a run.
Penn State thinks this is a run. They have eight guys in the box against six blockers.
ESPN's camera man thinks this is a run, zooming almost to the box before they even snap the ball.
It's a run. Specifically, it is a zone stretch to the boundary. Because this is the only run it could possibly be, Penn State is prepared for this. Kalis gets driven back. Bryant and Glasgow don't scoop the backside tackle (not that it really matters since there is an unblocked guy in the cutback lane and another unblocked guy checking Gardner).
This looks familiar.
Kalis finally finishes losing his guy, who pushes Toussaint to the edge of the field, where a ninth Penn State defender—a safety lined up over a formation that cannot have a tight end emerge from it to threaten downfield—comes up to tackle for loss…
…if Kalis's guy doesn't do it first.
Third and ten.
Items of Interest
This is the stupidest play in the history of plays. You can't pass because you don't have a right tackle and refuse to throw perimeter screens no matter how blitheringly open they are…
all of these occurred in the first 20 minutes of the game
…and Penn State knows this, so they put eight in the box against six blockers and have a safety overhanging who knows 100% that he has no immediate pass threat to deal with.
I mean, you can see the entire PSU D on the field here:
There is a wide receiver outside of Gallon. Only the dumbest playcall in history could allow a D to align like this and be successful.
You really confused them, though. Having Chesson and Houma switch places is the cherry on top here. Yeah, you fooled 'em up real good right there. Now Penn State's eight in the box against 5 OL and a WR is eight in the box against 5 OL and a FB. Green fields ahead, boys.
They're setting them up for something! If you don't have an automatic check to whatever your clever business is when you see two DBs on 3 WRs, you fail.
Line didn't do well, but whatever. Kalis gets blown up here, but since Michigan just told Penn State the play they were running it's not really the focus.
The bigger picture. This was insane and far from isolated. Michigan kept running tackle over stuff against a defense that was stuffing it even after Taylor Lewan went out. They asked AJ Williams to play left tackle, and because of Borges's increasingly legendary stubbornness they allowed Penn State to align in formations that doomed their crammed-together paleolithic run game without either testing PSU's young and not very quick corners or taking the buckets of free yards these alignments provided.
The bubble screen stuff took on a life of its own over the course of the last year, and it's come up again—a screenshot of Michigan's first snap of the first overtime screaming for a bubble has made the rounds of every message board. To reiterate, the bubble is a constraint: it prevents the defense from lining up in certain ways and thus simplifies your life as an offense since defenses can't pack the box as much without getting free yards on their face. Borges's allergy to getting the ball to guys in a ton of space went from annoying to crippling in this game.
How can anyone have faith in a guy who looks at this when he needs a field goal to win…
…and doesn't throw a bubble because it's not what Vince Lombardi would do? It boggles the mind. A lot of things lost this game for Michigan. Al Borges is high up on that list.
SITE NOTE: as is traditional during a bye week, the UFRs will be delayed a day, allowing us to ruminate in some more detail on a couple more plays that seem to be representative of larger trends.
Today in Michigan's running issues: an example of how all it takes is one breakdown for an otherwise promising play to end in the backfield. Offense and defense are opposite creatures in this regard. On defense, if you make a mistake it may or may not be punished, because someone can beat a guy and clean up for you, or the offense may not see the open receiver or cutback lane. On offense, an error is going to leave someone free and he will end your play more often than not.
A lot of Michigan's struggles so far have been one-guy breakdowns. This sounds like a promising, easy fix, but it's an unfriendly math problem. When you've got seven guys trying to execute, even if everyone has a 90% hit rate 0.9^7 is a 52% shot at someone not executing. At 95%—each guy doing their job 19 of 20 times—you still have a 30% failure rate.
That's obviously oversimplified; there are different mistakes that can make the difference between an unsuccessful run of three yards and an unsuccessful one of negative two yards. But I've been saying things like "it's just one block away from a big play" for a while now without actually seeing a lot of improvement in that category, and the previous paragraph is one of the reasons why.
Our exemplar is a zone stretch midway through the third quarter. It's first and ten after Drew Dileo extended an out route into the short seam and Gardner hit him. Michigan's in the I; UConn responds with a 3-4 look that has an extra guy hanging off the tight end side on the hash.
UConn did a lot of blitzing from the outside in this game, and this will be no exception. They'll shoot the guy on the hash upfield to be the force player and slant the other two inside, way inside in the OLB's case:
On the snap, nothing much is revealed as no one's made contact yet except Miller, who's underneath the nose tackle already:
That nose tackle is going to end up a long way downfield. I know we're all trying to take Miller's job, but he made a couple of nice blocks on these plays in the second half.
In the above shot, you can see the first steps of the defenders highlighted in the arrow picture coming inside. a half step later Michigan has both adjusted excellently and not adjusted excellently:
Both Glasgow and Lewan have adjusted their flight paths to intersect with the slanting defenders and have successfully made contact that will allow them to shove them past the play and open up a huge hole on the outside of the line, but Joe Kerridge is now trying to hit a gap that is not open.
When he does, he gets whacked.
Now off balance and a gap away from the actual hole, he's unable to block anyone. That's the one guy. When Michigan does this on defense I mention they got a two-for-one and usually good things happen afterwards.
Here bad things happen because Yawin Smallwood is now hanging out in the hole unblocked.
Fitz compounds matters by seeing this, considering a bounce, and then deciding against it, which gives up a couple yards.
Second and twelve blues.
Items Of Interest
Well, poop. Michigan blocks this really well on the line, getting both slanters sealed inside and driving the nose tackle back into a linebacker. But once Kerridge gets picked off, this play has a maximum reasonable expectation of about one yard. It only takes one error.
This would take some pretty fast recognition to fix. A lot of zone teams either eschew lead backs or place them in positions such that they, too, have a long path to the hole (think about "superbacks" in spread offenses that start lined up next to the QB). Kerridge is lined up to the playside about three yards in front of Toussaint and his first steps are upfield as he tries to build momentum for a bone-rattling LB block. Toussaint, in contrast, kind of waits and runs lateral to the LOS for a bit, so he has time to see the slant develop and find the hole that is unfortunately filled with one Yawin Smallwood.
Kerridge doesn't have that time. If he's going to make that read presnap he's probably guessing that the OLB is going to attack the gap outside of Lewan, and when that turns out to be wrong he's already committed. I'm not sure he can be any other way when he's lined up so close to the point of attack.
If you're going to do this it almost seems like you'd have to consider Kerridge another lineman and that Lewan should release downfield into Smallwood once the OLB crosses his face, but holy hell is that complicated. Michigan should be trying to make everything as dead simple as possible so they can have uninspiring runs that do pick up some yards.*
So this is a rock paper scissors minus. I don't think Kerridge has time to change his gap, and that gap gets filled by a slant. Even if Kerridge 1) has the option to pick his hole, 2) made a presnap read of the blitzer, and 3) assumed the OLB would slant inside, the OLB is outside of Williams so a one-gap slant takes him outside of Lewan. This puts Kerridge in the right hole. When the OLB goes two gaps over that's when the problems happen.
Toussaint bounce attempt again. Like that Nix play discussed earlier, here Toussaint has grim prospects that he makes a little grimmer by trying to escape. Despite all your rage, Fitz, you're still just a rat in a cage. Here it seems like he has been told that he needs to go N/S and remembers that after his natural inclination. Or he just thinks he can't get outside Williams. Whichever.
It is not an easy decision to bench Jack Miller. The entire world has already benched the guy for the Minnesota game; I'm 50-50 on that. I'm frustrated with him sometimes as well, but here's another loss on which the offensive line appears to be working just fine. He got dumped into the backfield once earlier in this game and struggled in a couple of pass protections (a couple of other pressures that came up the middle were not on him), but I wouldn't be surprised if Michigan soldiers on with their current five guys. Even if they don't, how long is Chris Bryant going to be able to stay on the field?
Also, folks speculating that Michigan might move Michael Schofield back to guard and insert Braden or Magnuson should stop. Miller is not bad enough that switching three spots on the OL and sending a good right tackle back to guard so you can insert a freshman is anywhere near an upgrade. That's a midseason switch worthy of a Rodriguez defense.
*[This is iso's role in the world. It is the DURRR SMASH of run plays, requiring almost nothing other than brute strength and rarely picking up more than three yards, but rarely losing any.]
Michigan's running game wasn't quite as bad as it looks in the stats, as they had some good gains wiped out by phantom holding penalties, but it warn't good. One of Michigan's main issues was not getting the Akron nose tackle blocked, but when this happened the guy in the backfield seemed only partially at fault, because Michigan was asking him to do something very tough.
Here's a play at the end of the first quarter. Michigan has just shifted various players around and gotten Akron to do this in response:
That is a massive gap between their nose tackle, who's "shaded"* over Miller, and their end, who's outside of Jake Butt. Michigan decides to run at this, which seemed like a good idea at the time.
*[ie, lined up between the center and guard, closer to the center.]
Michigan's going to run a stretch to the wide side of the field, and get a loss out of this. I know. So. Akron's got about seven guys in the box. Michigan has two uncovered OL to the playside plus Kerridge. This should be easy.
[After the jump, it's not going to be]
I wish I'd remembered that Bob Diaco linebackers play like they're hopped up on goofballs before the game. Here's the mesh point on Michigan's first offensive snap:
One ILB is almost to the line of scrimmage and the other is a yard back. This is way closer than almost any other team will be, and it is absolutely consistent. ND linebackers fire hard on any run action.
For the most part it's worked for them. Michigan won the Denard after Dentist game despite getting ten yards on eight tailback carries. ND's defense last year was lights out. Notre Dame's hyper-aggression at that spot has been a problem for Michigan's run game for the last couple years, as they haven't had effective counters. Their main one is the waggle, and we all know how that worked out last year.
Not much changed in this one early. Michigan's tailback running game was drips and drabs because of a lack of an effective counter trey. (You know, that play they showed against Central where Taylor Lewan pulled to the backside… ineffectively.) The longer runs they did acquire were almost entirely Fitzgerald Toussaint forcing errors out of ND safeties. For example, the UFR chart on Toussaint's early 14-yard sideline run has four minuses for bad blocks and no positives. Yikes.
Let's get a baseline in this one and see how Michigan responded later. This is a second-quarter zone stretch in which Michigan puts two tight ends to the top of the screen; ND responds with a rare three-man front (they were a 4-3 in this game that occasionally lined up in a 3-4 as a curveball) with a safety walked down:
This looks like a called blitz but in practice it's difficult to tell the difference between an actual blitz and the playside linebacker hauling ass at the first gap he sees. It's just alignment. Notre Dame got some TFLs out of this gap-shooting, and even when they didn't those linebackers forced Michigan to disengage from double-teams on Tuitt, Nix, and Schwenke early, with predictable results.
Meanwhile, the backside linebacker would ignore any cutback possibilities and flow parallel to the line of scrimmage at approximately the same rate the tailback did:
The overall effect is six guys at the line with one hovering behind for cleanup and that overhanging safety able to provide quick support. Even when Notre Dame screwed up this was mostly effective.
A moment post snap, Michigan opens up a gap as they go to double the two defensive tackles:
Note that the backside players on the ND DL are stepping away from the play, which they can do because the MLB is jetting into the gap they vacate. This also allows the backside LB to flow as he does.
Some of this is tough to see, but in this frame:
- Miller has disengaged from Nix in an attempt to cut the charging LB, which he does not do. He does knock him off balance somewhat, possibly contributing to his overrun of the play.
- Meanwhile, Glasgow and Lewan try to handle two guys who have disappeared from the frame: the playside end and charging safety.
- Both tight ends have locked on the playside LB, who is the force player.
- Schofield chases the MLB, who he has no angle on, but could still block if Toussaint cuts back.
A moment later the LB flashes into the backfield wide of Toussaint and runs by; playside end got his legs caught up in traffic and ends up falling, pancaked. Both tight ends are still on the force guy:
This is one of them gap things?
Except it's got a linebacker in it.
BONUS! Here is a super slo-mo version.
(Does this help? If this helps let me know.)
Items Of Interest
Notre Dame got away with at least a couple errors here. The playside end ends up underneath Glasgow on the ground and they spent a linebacker blowing past Toussaint to little effect. (They did get Miller down but offenses will take one for one trades.) If that can happen and Michigan picks up three yards you can tell that it's tough sledding.
Tough sledding. The goofballs approach makes life tough on offensive linemen, who have to make split second decisions to leave guy and then try to block a rampant guy with tons of momentum before they are ready. This is tough, and Michigan didn't do a good job of it.
Toussaint could put his foot in the ground here and make a cut. Schofield is chasing that linebacker and you occasionally see the blocking develop such that the tailback can make a hard cut upfield behind that OL and suddenly make him relevant. Right about here…
…if Toussaint goes hard north and south aiming for the hash he may shoot past that linebacker and into open space. That's why Schofield keeps following that guy despite not having an angle. It may not work, but you're at least giving yourself a shot. Toussaint had a good day overall; here I think he missed a cut.
The offensive line… I punt. They had a very tough first half against this line, and these linebacker gap-shots don't help. Miller just barely throws off that linebacker if he does anything, but then again that linebacker zips past the play he's moving so fast. If that guy can't make a play, can the OL make a play?
Meanwhile Glasgow gets a pancake that is probably aided by the ND lineman tripping on the blitzer's feet; Lewan ends up putting a safety on the ground. Points for them. This one was a lot better blocked than some.
Funchess is very frustrating. On this play, the linebacker to the top of the screen is obviously the force player*. Butt obviously has him kicked out. Funchess continues to block the guy the whole damn play instead of releasing downfield and getting a hat on the safety. There is no way this is right.
Meanwhile, on the single inverted veer Michigan ran, Notre Dame hyperaggression bit them as one of their linebackers roared up a gap and pursued Toussaint, as did Tuitt. Gardner pulled and got a nice gain. It could have been a lot nicer, but Funchess turned around again:
Also not right, as with Kalis headed to the outside the linebacker is the optioned guy. I know Michigan's blocked guys who are supposed to be optioned before; even if that is the nominal plan, nothing good ever comes of turning 180 degrees when you're a blocker.
That left no one to take the only guy standing between Gardner and a touchdown:
I guess it's better that the play wiped out by a nonexistent holding call was nine yards instead of a thirty-one yard touchdown?
We just saw this happen against Central Michigan; it's closing in on a pattern. Funchess remains a tight end in name only. The mental stuff is more bothersome than any lack of technique. All he has to do on some of these plays is vaguely bother a guy and Michigan can break a long one. Hopefully he makes some progress here in the next few weeks, but the relative prominence of Jake Butt in this game is not a coincidence.
*[IE, the guy who sits on the end of the line and accepts a kickout block. He positions himself such that if the back tries to bounce it outside he either gets tackled for has to take such a circuitous route that by the time he gets the corner for guys are waiting for him. Since things usually go badly—very badly—for the defense if the force player is not doing his job, he is limited in how dynamic he can be what with throwing blockers away and getting TFLs, so doubling him is useless.]
Michigan did exploit this, eventually. You may notice that I'm not complaining about how Michigan didn't adjust to this. This is a tease.
GOOD? I think probably yeah. [Bryan Fuller]
You know that basketball game column after the Wisconsin halfcourt shot game where I laid out a scenario in which Bo Ryan was the vanguard of the bug people from Rigel? I disclaimed any belief that was actually true but asserted that if it was, Wisconsin basketball would be exactly the same as it is today.
So… Al Borges's gameplan. Michigan came out throwing from the shotgun, and that caused me to tweet out that this newfangled offense looked a lot like the oldfangled offense. I didn't yet perceive that Michigan's first four handoffs to Toussaint were zone stretch plays, i.e. the very foundation of Michigan's offense under Rich Rodriguez. I'm pretty sure that Michigan ran fewer than four stretches all of last year. Al Borges isn't trolling me, but if he was nothing about Michigan's gameplan would have changed. (Bubble screens are now trolling Heiko.)
Evaluating the stretch is like getting back on a bike for me. It was also Michigan's base run play for the last two years of DeBord, so for the five formative years when I was learning to say more about runs than "that's a big ol' wad of bodies" the majority of plays I was looking at were stretches. I'm still much better at figuring them out than any other run play.
This is relevant in a credential-establishing fashion: I've seen a lot of these and now I'm going to say something that might be a little out there. I think Graham Glasgow might be quite good. He and Miller consistently crushed the playside defensive tackle on scoop blocks throughout these four carries, which is a good sign to begin with. And on one I think he did something advanced.
The setup: first and ten on Michigan's second drive of the game. They come out in a 2TE set with both TE's to the boundary—the boundary is the short side of the field. Central is in their standard 4-2-5 personnel.
Funchess motions to the top of the formation; Central slides to that side. The aggressive posture of the safeties likely indicates cover four, which sounds conservative but isn't really. For our purposes that means that either or both can charge hard at run action to his side.
On the snap, the telltale tilt of the center sideways that indicates a zone stretch. On inside zone the line goes more vertical, attempting to blow the DTs back with doubles. Here they're trying to shift their line a gap over.
Lewan immediately crushes the playside end inside, which is bad for defenders. Glasgow bangs the playside DT as Miller tries to scoot around him in time to pick him up when Glasgow leaves.
This is all working just fine. The situation:
- The end is bashed inside and has given up the corner. Toussaint will go outside.
- The backside DT is headed to the ground on a cut block.
- Miller and Glasgow have gotten some push on the playside DT and threaten to cut him off.
- Funchess is releasing downfield.
The issue is the red line. That is the middle linebacker on his horse, headed for the backfield.
Funchess is about to violate a fake cardinal rule of football that I made up: never turn upfield on a run play. When someone runs by you, they're gone. You may have screwed up, but you can't fix it by turning around. Go further downfield and hit someone else and hope to God it all worked out okay.
Well, go ahead and violate it.
And of course the thing is you can see in these stills that Graham Glasgow has seen this linebacker charging, disengaged from the scoop block on the defensive tackle, and successfully engaged him. That wasn't even Funchess's dude. Funchess can't feel the play like Glasgow did.
In the wider view you can see that Michigan has a a hat on a hat except for one guy:
That DT that Miller's handling gets sealed away:
The upfield guy is actually a linebacker Kalis is chasing. Miller has stepped around to get his helmet playside of the DT, though, which means he's done.
Toussaint hits the hole, getting hewed down by that filling safety as Funchess realizes his error, turns around, and tries to get downfield:
Glasgow's guy is on the ground. Safety tackles as Toussaint runs inside of the Jackson block; five yards is the return.
Items of interest
Man I like this play from Glasgow. I suspect this is a very bad player they're doubling here and blowing him up is no great accomplishment. Level of competition disclaimer applied. But as mentioned, I have seen an awful lot of zone stretches. It is very rare to see a guy with the speed of thought and fleetness of foot to both decide he needs to get on that guy right now and actually get there. That reminds me of David Molk.
I also liked Glasgow's immediate release on another stretch when Central's slanting away from the play:
That is decisive recognition of the fact that the DT has stepped away and he's free to climb to the second level. He goes out, he gets a block, he does not hang around wondering what he should do. It's not a miracle or anything; it is an easy thing to see a first-time player screw up. So far Glasgow has been consistently executing his assignments and throwing in flashes of serious promise like the play above. I don't think I could be any happier with his performance in this game so far.
That is a great, great sign. Obviously. It changes the entire tenor of the offseason competition on the interior of the line if Graham Glasgow is just good.
And he can pull! Should have sent a poet.
This was one play after Lewan pulled and ended up four yards behind the line of scrimmage. That is the fastest dang pull I've seen while doing this. This is saying very little, of course. Even so this is a good thing to see from a first-time starter at guard. He can zone. He can pull. He seems to be consistently executing his assignments. His skill level seems very high, and if he can physically match up with Notre Dame you should prepare for a barrage of Glasgow == Kovacs, "don't you dare call him a walk-on" stuff.
Funchess is still a work in progress. While he is trying his darndest with the blocking, he is just not a natural. Here he gets lost and blocks no one. Worse, on the second Gardner interception he does not pick up a guy that Williams is passing off to him, and that guy gets into Gardner's feet. As a result Gardner's throw is way long and intercepted. If Gardner understands the coverage and is trying to back-shoulder that throw, he could get a nice completion there, and FWIW he did mention that in the presser:
The next one, I got hit while I threw it, so it kind of went [farther than I intended], and you can kind of control that, but not as much as you'd like to. via Heiko
He did some good things with his blocking, but that wasn't a one-year reclamation project.
I do think this is an unnatural thing, for guys to let it go when dudes flash by them. But once you turn upfield you're done. If Funchess had gone 90 degrees and then continued downfield he probably still gets the block. It's not the thought he should take this guy that dooms him, it's how long he takes to decide that he actually shouldn't.
You're done now. The weirdest thing about these stretches was what happened on the end. He got obliterated inside by Lewan every time. That gave Michigan the corner easily. Bad player, surely. Also one unprepared for Michigan to run the stretch. I never saw that in the DeBord/RR days no matter who they were playing. Those guys were hauling ass to stay outside the tackle every time.
That's actually the easiest read in the book for a guy running the stretch. Rodriguez had three rules for the tailbacks that went by "bounce," "bend", and "blast." Bounce was the first one and that was simple: if the end gets sealed go to the corner ASAP. This was handled in about fifteen seconds because it never happens and if it does it's yards every time.
Why would they be running the stretch all of a sudden? Well, they seemed pretty good at it. Michigan was one block/step away from busting some long ones. It may be hard to remember this, but Jack Miller was a Rodriguez offensive line recruit more in the mold of agile bastard David Molk than someone that is going to excel at blowing guys off the ball. But I think the main reason is:
NOBODY fripperizes facemasks like the Notre Dame Fig Things
That's 322 pound Stephon Tuitt hanging with 340 pound Louis Nix, except this is probably a shot from last year's Michigan State given the background color. That's 15-20 pounds ago for each. Tuitt's backup is a somewhat touted redshirt freshman who is not Stephon Tuitt; Notre Dame lost Nix's backup to a season-ending injury and now the man behind him has a Notre Dame bio with an impressive set of accomplishments that happen to belong to Prince Shembo. Kona Schwenke is a senior with seven tackles to his name who was an obvious downgrade when Nix was out with the flu last year.
Stretch plays are good for getting rid of planetoid defensive tackles and making them run down the line in a futile chase to the ball. Notre Dame fans also apparently think their starters in the middle these days (Dan Fox and Carlo Calabrese) are uninspiring plodders after the Temple game, so Michigan would like to make them run, too. Hypothesis: the stretch is something Michigan thinks will beat ND.