While exploring the defensive adaptations to offensive trends towards "the spread" (Va Tech in the 90s / Saban Cover 3 adjustments ), and not intending to repeat any of the fantastic coverage of TCU defensive tenets done at Run COD Hit, it would behoove us to at least go over how TCU would confront 2x2 / 3x1 formations out of their base split-field coverage, '2 read'.
TCU's 42 defense is based out of Cover 2 "Read", which is really just a robber + quarters read out of a MOFC look. TCU will typically not play ‘2 Read’ against any 1-back look (preferring Blue or Cover 5), so what we are presenting is just a ‘worse-case’ scenario against this coverage.
Since they are splitting the formation in half, they are just reducing the concept down to the 1, 2, or 3 receiver matching. Just like the Rip/Liz adjustment covered before, when facing a balanced 2x2 formation, the secondary would have to declare which side they are going to play as the 'read side' (where the FS will be robbing). If '2 Read' is called, versus a 2x1 formation, the FS would naturally rob the receiving strength (2 receiver side). With 2x2, you would have to declare "reading left" to communicate the 'read side' and the 'away side', alerting the away safety on how he will handle #2. To the 'read side', this is how zone distribution would essentially play out in a nutshell.
"2 Read" is the base coverage TCU bases out of (it really is just robber). They may not even run this coverage much after installation, but it remains the elementary foundation for all subsequent variations regularly employed.
To get down to brass tacks, the rules are relatively simple and outlined below:
Since they are splitting the formation in half, they are just reducing the concept down to the 1, 2, or 3 receiver matching. Just like the Rip/Liz adjustment covered before, when facing a balanced 2x2 formation, the secondary would have to declare which side they are going to play as the 'read side' (where the FS will be robbing). If '2 Read' is called, versus a 2x1 formation, the FS would naturally rob the receiving strength (2 receiver side). With 2x2, you would have to declare "reading left" to communicate the 'read side' and the 'away side', alerting the away safety on how he will handle #2. To the 'read side', this is how zone distribution would essentially play out in a nutshell.
"2 Read" is the base coverage TCU bases out of (it really is just robber). They may not even run this coverage much after installation, but it remains the elementary foundation for all subsequent variations regularly employed.
To get down to brass tacks, the rules are relatively simple and outlined below:
Read Left
Read side Corner- 1x7 match deep vertical threat
Strong (read) Safety - 5x1 force on run / pass read: open to flat "swing deep to 3"
Free Safety- alley fit on run / pass use 'Robber rule' - vertical by #2 / no vertical by 2, rob curl-to-post of #1
Strong Backer -match #2 - #3
Weak Backer - match #2 weak vertical
Weak (away) Safety -run force / pass curl-flat "swing deep to 2"
Away side Corner-deep 1/2 (over post of #1)
Read Side Communication
Corner is 1x7 in press bail shuffle with a man-clue of the #1 receiver. Corners always 1x7 unless #1 receiver is outside of numbers (they never cross the numbers in robber). Corners always play inside leverage, always protecting the post (because you don’t know if you’re going to get help from the FS). The post-snap cushion is not enforced, and in fact, Patterson wants receivers to break the defender’s cushion so he’ll only have to play one side now. If there is only one receiver split, the corner will man-turn into the route. If there is more than one receiver split, he will zone-turn into the route. Because this is a robber concept, the corners are taught to make the post a priority and, if necessary, align as much as 4 yards inside the receiver to protect the middle of the defense. With these rules, Patterson essentially invites offenses to run the post-corner because he feels he can take everything else away and force this difficult throw. To get the most out of this coverage, a pattern-match communication system is utilized to hasten how the 3 key defenders respond. The corner will communicate pattern response to his area players (FS & read side safety). Of the read side calls he will make (and responses) are:
CHINA
If #1 is short/hitch the corner makes a “China” call. This flags man responsibility for the Strong (read) Safety. The read side safety will run under (to) #1 because the corner is sinking (on corner route) to match the first outside short threat (flat). A short #1 with a detached #2 receiver typically is going to give you a “smash” (or China) concept, with #2 continuing to press vertical. With #1 shallow, the corner will declare “China” and immediately look to match #2 over the top (and outside). The “China” call also help identifies that there is no post threat from #1 and that #2 is the only other possible threat vertical, so the Free Safety will look to aggressively jump the route of #2.
OUT
If #1 receiver breaks out (he’s no longer vertical) the corner will continue to sink and look to match #2. The ‘out’ call alerts the Strong (read) Safety to look to rob #1 underneath at 10 yards out. Since this overhang safety is always aggressively expanding to the flat, he won’t be giving up much separation on #1, so the throw (to #1) would have to be shallow and near the sideline for a completion.
IN
If the #1 receiver is not shallow (‘china’) but breaks inside at a depth greater than 8 yards (‘dig’ / ‘curl’) , the corner will communicate an “IN” call . This alerts the read safety that there is a threat coming inside over the top (of his drop). The safety should look to become an outside-in player (he’s going to the flat right now, because he’s got a curl player dropping - the FS).
Strong (Read) Safety
The (overhang) Safety aligns 5 yards deep on #2 (removed). Versus a standard tight end or pro look, he would align 3 yards deep and 7 yards widen (discouraging being reached on perimeter action). On EMOL high-hat pass read the target depth for his drop will be 8-10 yards. He is going to remain shallow on his drop with the intent to expand to the flat as quickly because the FS will be dropping inside of him in the curl (if that is what is threatened).
Don't get hung up on semantics - the 'read' safety "swing(ing) deep to 3" is essentially the standard 'curl-to-flat' responsibility, but an emphasis on staying shallow and man-conscious. This methodology helps the defender be less dogmatic and be an aggressive matcher in coverage ( if a man runs through his zone – he's got him vertical ). The rationale behind teaching it this way is to encourage the safety to open up and get to the flat (with no landmarks).
Free Safety
The alignment of the free safety will be 8-10 yards deep over the read side guard. This allows him to gain a clear read on an uncovered linemen and an quick response path to the inside vertical threat of #2.
Once the offense breaks the huddle, the free safety will identify the backs, determine the read side and communicate to the other defensive backs, “check 2 – read right” (coverage and what side is being matched). The response of the free safety is just like robber, with the #2 receiver as his pass key:
- #2 goes vertical, he matches all of #2 inside leverage.
- #2 does anything but vertical, he robs the curl/post of #1.
This vertical-clue will handle all routes deeper than 8 yards. If #2 is out (and under 8 yards), the free safety is communicating “WHEEL” to the corner (see the curl-flat combo illustrated above). This is essentially telling the corner, “you have an outside route by #2 - so you have curl-post help (from FS)”. This works even if #2 isn’t going to wheel that out route, but it lets the corner know he can now back off of #1 because of the help available.
When #2 is no longer vertical (out / out-up), the free safety then reads the hips of the #1 receiver. If #1 sinks his hips (for a break) the free safety will drive at the receiver’s break and step in front of him (interception point).
If the #1 receiver doesn’t sink his hips, the free safety immediately turns into the middle of the field (away from the receiver) to rob the post.
Inside linebackers
TCU's rules split-coverage rules mean they never have to displace the 6 in the box. The stacked (inside) backers would always match 2-to-3 regardless of formation with the other (away from final 3) being the rat in the hole. So if you’re a 4-2, its all relative if you play this with a 3-3; the numbers are the same. These players doesn't have to be anywhere fast, in fact, the slower they are at reacting the better, because they should be thinking draw or screen (off pass-action) initially.
For read side linebacker, once pass shows he is to middle drop vertical to find/match the final 3 receiver. This player is looking to defend his run gap first, then take away the hot (throw). By slow-playing pass action, he always tries to make #3 go over the top of him, and from there it just becomes a "man-to-man" zone as in basketball (boxing out #3 deep).
For the away side linebacker, it is essentially the same as the read side linebacker, with the exception of matching #2 (away) vertically. Typically, this player is the (wider) bubble backer and against any 1-back look, TCU will be slanting the defensive line. This linebacker must replace the former middle-of-the-field safety in the hole. Rather than a ‘robot’ reaction away from the ‘final 3’ player, he would gain depth vertically on #2. If #2 pressed vertically after 8 yards, the away side linebacker would have to carry him man-to-man regardless if he makes a break deep in his route. It isn’t pretty, but that is the answer for 1 back routes.
Weak (Away) Safety
On pass read, this player will play like a standard curl-to-flat player in cover 3. He has no immediate curl help and will work in tandem with the corner. He does not carry #2 deeper than 8 yards and does not reroute. He should never cross the hash when responding to an inside route, as the away side linebacker will be working to that area.
This is actually a great addition to standard robber coverage and the adjustment (with split-field) principle helps prepare your players for the ‘breakable’ scenarios. In the next (soon) installment, we will go over the very basic trips (3x1) adaptation using this same coverage.
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