Originally Posted by Bluestang
Lack of speed will always be an issue in any scheme.
3-4 alignments will send 4 rushers in a base look leaving 3 line backers to cover the middle zones of the field.
4-3 alignments are the same way.
I know we get caught up in specifics of players in both schemes but speed is still an attribute everyone covets in the NFL.
It's true that many teams covet speed, but not at the expense of size. Only Jimmy threw the planet rule out of his book when he came to the NFL. Jimmy does not place a premium on height or weight on his defense. He was all all about speed, smarts and toughness.
Jimmy's 4-3 Slide is not the same as Kiffin's 4-3 Under but they both place a premium on speed. Especially at LB. Even Landry's 4-3 Flex valued smarts & speed over size with LB corps.
OLBs in a 4-3 are usually oversized safeties. Except for the SAM in a 4-3 Under. That position usually moves to the LOS at the 9 technique in passing situations. The ideal SAM in a 4-3 under usually has some length to him.