Friday, July 16, 2010
4-2-5 Alignments-Part II
Alignments to the pro I is very straight forward and allows room for flexibility and imagination. In this part I will focus on base alignments with a few other options.
The front and secondary both declare the strength the same way in this alignment. The TITE call puts the 3-tech towards the TE, the strong DE aligns in a 6. The backers align in 30 techniques. Some people argue that the backers should align in their gaps. ie, the RB should be in a 10. However, in the 30 alignment the RB can still defend his A-gap and is in a better position to play outside and off-tackle plays towards the TE.
The secondary calls "read-left" and sets the SS and FS in coverage to the left. The strong safety aligns 5-7 yards outside the TE and about a hard from the LOS. Also, the SS cocks his stance in and places himself perpendicular to the LOS. This alignment allows him to get under routes by the #1 WR, have a good angle to force the ball, and make it difficult for the WR to crack block him. The last reason needs further explanation. Teams like to run outside, will get tired of the SS forcing the ball back inside. So, they will attempt to crack him inside in order to get around the edge.
Making the crack difficult is accomplished by this alignment for a couple reasons. First, his back is turned to the WR. The receiver cannot legally block him in the back. Second, if he does attempt to crack block him, the crack will occur near the LOS. By making a crack happen at the first level, the corner is free to replace the SS as the force man. If the crack occurred further from the LOS, the corner could not replace as quickly, because he has to respect the crack and go. By attempting the crack at the first level, the threat of the crack go is eliminated. It is difficult to fake a first level crack and turn it into an effective go route.
The WS aligns in a postion to force the edge to his side and play the cutback on plays toward the TE.
Twins is a formation where the front and secondary call the front in opposite directions. The AB is aligned in 10 in the diagram, but he could just as easily be aligned in a 30, it makes little difference. The SS and FS align to the twin WR's just like they would versus the spread. On the TE side the corner is shown close to the edge playing force. The WS could just as easily be there. The alignment each year might be different depending on the type of corners and WS you have. Below is a diagram of TCU from this past year aligning to twins.
Versus the Full-back set strong
Here the backs slide over and WS comes up into the nest, this call a "scoot" adjustment. Everything else is the same as regular pro-I alignment.
Here the alignment follows the base rules. The strength in the diagram is arbitrarily to the left. Versus the balanced front and the motion based nature of the flex-bone, the free safety will declare the read-side upon motion.
The last view diagrams are an example of how TCU aligned versus Clemson principals. The particular scheme they employ is not really special to the 4-2-5. I am showing it as a way of understanding how the particular positions are aligned.
A safety has replaced one of the corners on the right edge. The DT's are hard A-gap player, and the backers are cheated-up into their gaps. There are two safeties to each side aligned on the edge and behind. The corner in the middle is adjuster who moves with any motion by the backs. This allows the front to stay relatively focused on the play by leaving adjustments to the corner. The next diagram shows the formation after motion.