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The Prof
04-06-2009, 11:04 AM
The point is: one gap DT's and 2-gap DT's use entirely different TECHNIQUES, they really play a totally different game.

Where a DT lines up, first of all, determines his RESPONSIBILITIES.

And these specific DUTIES of his, in turn, dictate his METHODS.

That is, if he's lined up in a gap (an odd # in the D call), then he is accountable, obviously, for that gap---no runner may get thru.

He's a 1-gap DT, therefore.

So he uses a 1-gap technique---the reason it's called "3 technique," I believe, is cuz the guys who use it the most mostly line up in the 3 gap.

Like Rob Ryan's LDT, most plays.

The 1-gapper, incidentally, league wide, is predominantly LDT---that is, he faces O's strong (R) side.

Asking a DT to handle 2 gaps on the strong side, apparently, is requesting too much.

2-gappers play backside.

Ok.

So, 1-gap DT, almost always LDT, or UT (Under Tackle).

His technique (the point):

DL Coaches are obsessed with this rip move of theirs---inside-arm-upward-rip.

Rip and go.

Trivia Q: What part of DT's exhausted body does he complain most of?

Coach---I can't lift my arms.

1-gapper explodes, first step, violently into his gap.

READING AS HE GOES.

If the play's away, adjust down the line, belly up---S angles!

Get your belly, squared up, between ball and goal line.

If, however, the play is not away.

If instead it's right AT you.

If it is YOUR gap that's under assault.

Then YOU are in giant danger.

Then everything's on the line---your career---certainly any pretense of being any good.

Theoretically, if you're beat in your gap, you're outta here.

You must: STEP FORWARD AND BLOW UP THE FIRST THING YOU SEE.

FB, OL, ball carrier.

Blow up 2!

NEVER dance in the hole.

NEVER play clever.

Or athletic.

Basketball.

Power Forward.

No.

Pvt Ryan's closer to truth.

STEP FORWARD AND BLOW UP THE FIRST THING YOU SEE.

WIN YOUR GAP.

NEVER get driven.

Double team. Triple team.

No excuse.

You DIE IN THE HOLE instead.

Start a pile.

I have almost confirmed that DC Ryan (as opposed to Spielberg's Ryan) uses more than one D front (we'd all certainly expect him to).

I'm pretty sure 73-52 is his base.

I'm also close to certain I've seen a Raider 2-gapping NT nosed-over an enemy C.

That is, at 0, zero, over C, in the D call.

So, we've covered 1-gap, LDT, UT, both responsibilities and techniques.

Now, 2 gapper, RDT, NT.

In 73-52, he'd be at 2, head up over O's LG.

Again, 2-gap's play backside.

Our NT, by the way, is sposed to be Sands. But he couldn't hang, so got benched.

After which, our overworked Sapp and Warren mostly alternated at the far more demanding RDT/NT.

Sands saw time subsequent only to gas one of that much better pair.

Now, 2-gapper's responsibilities are self defined.

The point (finally): his totally different technique.

Instead of ripping his inside arm, exploding into his gap.

NT blows into his MAN.

Not control his gap.

Instead, own his opponent.

Get UNDER him.

Hit him: sooner, harder, and most important, longer.

Drive your legs, turn your legs over, keep your feet moving.

Head up, big time.

Giraffe your neck.

NT's GOTTA see.

The point: NT ABSOLUTELY MUST NOT COMMIT. Not til he's absolutely sure.

DON'T GO TIL YOU KNOW.

If RB's hitting either the 1 or 3 gap, then:

IT'S ME!

NT absolutely DOES NOT have to make the tackle.

That is positively NOT his job.

Instead, he is to FILL either gap, whichever is assaulted.

Direct your violence into the gap being attacked. Fill it---with your belly, your butt, your opponent... anything.

Of course, O can get quite tricky, in addition.

Now, the bane of all D Coaches---guessing.

2-gappers, exhausted, maybe stupid, doesn't get it, poorly coached or undisciplined.

But, oh yeah, you're not surprised---they're guessing all the time.

CB's too---naturally, for some reason (think about it), but CB's are super prone, at about 15 yards, to jumping the out route, or cross, that isn't there.

Just beginning to jump it, actually, which proves fatally sufficient.

I can't imagine any single human being this side of Cortez Kennedy able, physically able, to hold up at NT for, say, 40 of D's usually 60 snaps.

Professor Eyepatch

PINGU
04-06-2009, 11:14 AM
I have almost confirmed that DC Ryan (as opposed to Spielberg's Ryan)


or Meg's...

Raider Jason
04-06-2009, 11:37 AM
The key to the 4-3 system being productive starts with the DE's. If one of the DE's is quick enough to get past his offensive tackle, the quarterback will normally see this and try to step forward towards his center and two guards, thereby getting out of the way of this very large and unfriendly person. This is where the nose tackle and 3-technique come in. (Nose Tackle being Warren/Sands and 3-Technique being T. Kelly) If they are doing their jobs, the nose tackle has pushed the center backwards almost to the quarterback (as Professor Eyepatch so eloquently pointed out) and the 3-technique has almost gotten past his guard to get to the quarterback. If this has happened, the quarterback has no where to go, so something very bad is about to happen to him. If your four down linemen can consistently rush and disrupt the quarterback without any help from the rest of your defense, the offensive team is in real trouble.

Another rule you may want to consider to help remember this a bit easier is that "A" Gaps are on each side of the Center. "B" Gaps are between the Guards and Tackles. "C" gap is between the Tackle and the Tight End. Also, Strong Side means the side of the offense that has the tight end, normally on the Defense's left. Now for technique: The centers right and left shoulders are considered "1". The Guards inside shoulder (closer to center) are considered "2" and his outside shoulder (sideline side) is considered "3" (This is where the 3-Technique DT line up). The Tackles inside shoulder is considered ""4" and outside shoulder is considered "5".

Hope this helps. I love talking Offense!

Langlier
04-06-2009, 11:45 AM
One quick note -

NTs are not allowed to line up directly over the C in the NFL.

Theres some good stuff in there Prof but we really need to teach you the art of the paragraph

Langlier
04-06-2009, 11:47 AM
http://www.footballtimes.org/AdvHTML_Upload/gaps.gif

Traditional gap assignments diagrammed for those confused

I've seen different ones but this one is the most common

I'll look for the main alternate

http://eparkers.org/football/coaching-youth-football/images/defensive-alignment-techniques-gaps.jpg

thats the major alternate

brick
04-06-2009, 11:55 AM
Prof,

I think you hit at the core of what seems to be alot of confussion that keeps coming up in the Raji discussions, and that is the difference between "Techniques" and "Gap Responsibility".

The diagram below lables the techniques that a Dlineman may line up in. When you hear a person talking about a 1, 3, 5, ect... technique, they are not talking about what the player's responsibility is on the play, they are simply talking about where they line up in relation to the offense.


http://s179.photobucket.com/albums/w309/brick77/4-3.jpg

In the above diagram the DT is lined up in a 3-technique, the NT in a 1 technique, the LDE in a 7 and the RDE in a 5.

Now in this diagram, both the DT & the NT are 1 gapping. And your description of 1 gapping is pretty good for what the player has as a responibility. However, the technique that the player is aligned in, does not necessarily dictate the gap responsibility.

Either the DT or the NT in the above diagram could be tasked with 2 gapping. The DT by exploding into the RG rather than the B gap, and then being tasked to control both the strongside A and B gap, or as is more common, the NT could explode into the C and control both A gaps.

This is desirable as it allows the MLB to flow freely to the play with no gap responsibility. In contrast to the above Diagram where the MLB is tasked with covering the strong side A.

brick
04-06-2009, 12:07 PM
http://www.footballtimes.org/AdvHTML_Upload/gaps.gif

Traditional gap assignments diagrammed for those confused

I've seen different ones but this one is the most common

I'll look for the main alternate

http://eparkers.org/football/coaching-youth-football/images/defensive-alignment-techniques-gaps.jpg

thats the major alternate


Lang, that 1st diagram you have looks to me like a offensive diagram for calling out the running lanes in an odd/even numbering scheme. Where a "32" in the play call would be the tailback hitting the 2 hole (right side A).

I personally have never seen that used for DL gap asignments. Thats not to say that it isn't used that way.

Langlier
04-06-2009, 12:33 PM
Lang, that 1st diagram you have looks to me like a offensive diagram for calling out the running lanes in an odd/even numbering scheme. Where a "32" in the play call would be the tailback hitting the 2 hole (right side A).

I personally have never seen that used for DL gap asignments. Thats not to say that it isn't used that way.

depends on whos doing the teaching. but technically the 1st one is used to teach gap assignment on a basic level.

NFL gap assignments are different.

jatfly
04-06-2009, 12:34 PM
One quick note -

NTs are not allowed to line up directly over the C in the NFL.

Theres some good stuff in there Prof but we really need to teach you the art of the paragraph

GOOD STUFF....and I have to agree...I appreciate the knowledge Prof is always dropping, but I can't read that much in that set up.....

Rupert
04-06-2009, 01:35 PM
Brick Nails it, except in his diagram the LDE looks more like he's aligned in a 9 and the RDE in a 7. In a rush defense you'd never use that alignment, in a pass defense (which the diagram looks like) you very well might to force the outside blockers to get wider and/or deeper (for an inside backer blitz or an inside move).

In that diagram the LG and C are most likely going to do an inside zone combo on the RDT. Depending upon the play direction either the LG or C will hang on the block long enough to let the other get squared up before they bust to the 2nd level and take out a backer, most likely Mikey.

This is what having a more physical Mike would allow us to do.

RF34
04-08-2009, 11:34 AM
This is all good stuff....

Birdwell
04-08-2009, 07:44 PM
Cliff,

This is good, but you kinda stole my gig, yeah? (LOL, sometimes it takes a different voice to get through.)

One quibble, though. the NT or 2-gap does NOT guess, certainly not often, and NOT all the time. Takes a different level of football intuition or reading, though. Explode into the guard or C, and you will feel which way they're trying to block you -- a guy blocking down does not feel like a guy trying to drive you, and a pocket block in pass protection is obviously different from a guy suckering you in on a screen. But you also "see" in your peripheral vision what's happening around you on either side, you hear your MIKE -- put it all together and you have a very good basis for "knowing" the ball is coming HERE or THERE.

(My direct knowledge of this is limited as a blitzing SS, but I played with a pretty good 2-gap DT in school and that's how he described it to me. Watch the highlights of Raji, e.g., and you'll sometimes see him just reach out a grab a guy he can't see because he's completely engaged by a blocker.)

People are too quick to discount intuitive knowledge. On the field, more often than not that's what you have.


The key to the 4-3 system being productive starts with the DE's. If one of the DE's is quick enough to get past his offensive tackle, the quarterback will normally see this and try to step forward towards his center and two guards, thereby getting out of the way of this very large and unfriendly person. This is where the nose tackle and 3-technique come in. (Nose Tackle being Warren/Sands and 3-Technique being T. Kelly) If they are doing their jobs, the nose tackle has pushed the center backwards almost to the quarterback (as Professor Eyepatch so eloquently pointed out) and the 3-technique has almost gotten past his guard to get to the quarterback. If this has happened, the quarterback has no where to go, so something very bad is about to happen to him. If your four down linemen can consistently rush and disrupt the quarterback without any help from the rest of your defense, the offensive team is in real trouble.

Chicken and egg thing, RJ. I'm on the other side. DTs collapse/penetrate the pocket from the inside and up the middle, forcing the QB to run into the arms of either. Unless the QB fails to see the DE coming from the outside, he can either goinside him or outside him unless the DE has taken a perfect route. That's why I'd rather start with the DTs getting into the QB. Given the abysmal pass rush and gap discipline our of DEs, that's an especial concern.

A chicken is just an egg's way of making another egg.

Peace.

Rupert
04-08-2009, 09:18 PM
Bird: Yep. You're on that there.

Another way of teaching it is a visual read and a pressure read. Based upon your visual read you've got several option for your pressure read.

Say for example you're on the guard and he pulls around the tackle. Depending upon the formation (gotta know what's going on before the snap) you'll either see the tackle down block you, or the center try to reach you. If the center is your pressure read and you don't feel his hands on you you know the tackle is coming. There is an outside chance the center will merely punch you before the backside guard pulls to you. But regardless, the pressure read tells you what the visual read did not.


When it comes to the DL. If your DL is very good, they complement each other to the point that the QB can't escape and is always under pressure. You can usually tell a weak link in a DL by how the QB responds to pressure.

If his first step is back the pocket is collapsing pretty evenly.

If he steps up, no pressure up the middle.

If he takes off to either side, that side isn't keeping contain (whether it's an inside move that got smothered or the DE couldn't get outside leverage on the OT).

If he takes off between the OT and OG, the DE got pushed deep / wide leaving a gaping running lane.

There are as many ways to defeat pressure as create it. But you can usually tell where it isn't.

Birdwell
04-09-2009, 02:09 PM
Rupert,

Good description on how guys avoid pressure. Could also be a sign that the QB knows the weakness of his line, as much as the weakness of the D-line. When Russell dropped straight back this year, he was as likely to step up as anything, bacsue of the relative strength of the GCG as opposed to the OTs.

Rupert
04-09-2009, 03:52 PM
Rupert,

Good description on how guys avoid pressure. Could also be a sign that the QB knows the weakness of his line, as much as the weakness of the D-line. When Russell dropped straight back this year, he was as likely to step up as anything, bacsue of the relative strength of the GCG as opposed to the OTs.

True enough.

The Prof
04-09-2009, 05:29 PM
wow