That still doesn't preclude a guy from making the transition as far as I'm concerned. College guys have more varied requirements at every position in the NFL from what they had in College.
Why wouldn't you want to change the position in the NFL from being populated by 6'1" 235lb guys to 6'4" 250lb guys who are almost if not just as quick.
For me I want my 3-4 Wilb to be able to race, good 20 or 40 time, to the football on run plays and to be athletic enough to get out and cover RBs and TEs and slot WRs on occasion on the passing downs.
Another question I have is what is a "rush" outside linebacker? I always thought that the 3-4 was designed to confuse the offense as to where the pass rush was coming. But what I see all the time is that the ROLB in a 3-4 is supposed to be the pass rusher far more so than the LOLB.
Not exactly. The 3-4 defense was designed to help contain the outside run:
In the NFL there are many running backs who are incredibly athletic. O.J.Simpson was perhaps the first of these, but today there are perhaps a dozen of them. These guys are very shifty and hard to chase down. Defensive linemen simply can't do it. So the solution was to remove one of the DL from the defense and substitute a fourth linebacker. These linebackers have the speed to chase down such running backs. The 3-4 defense was motivated by two factors: the difficulty in getting good defensive ends, and the need to stop very fast running backs. This is the strength of the 3-4. The DTs keep the offensive linemen off your linebackers, leaving them free to roam the field and bring down runners.
The zone blitz package
is designed to confuse opposing QBs with where the pass rush is coming from, but not the 3-4 defense itself. The "rush linebacker" is used to refer to that smallish DE who's going to be playing in the 2-point stance and rushing the quarterback/crashing the LOS 80% of the time or more. It's used not to confuse people on the more traditional ILBs or the hybrid SOLB, which is kind of a bigger SOLB in a 4-3 defense, and is currently manned by Clark Haggans.
As for those who are saying that the Cards should use Haggans at WILB: they really couldn't be making a bigger mistake. Yes, in some run packages, Haggans might have been used years ago on the inside in Pittsburgh. But no one should think that Haggans is not a player in
real decline. He wasn't with the team for the Super Bowl run two years ago, and no one really missed him. He can cover the flat and contain the outside run, but that's about all he can do.
Does anyone remember a single play that Clark Haggans made last season? One?