lumm0x

Rob Ryan didn't install the 3-4 in Dallas. It had been in place long before he got there via Wade Phillips. The reason Ryans defense regressed against the run can be attributed to losing Sean Lee, Bruce Carter and Jay Ratliff for most of 2012. The improvement in the secondary and passing defense came via adding Brandon Carr and Morris Claiborne.

Take any defense and remove the top 3 players versus the rush and add two top tier secondary players and you will see the same result. This is absolutely nothing to do with Rob Ryan.

I have no issue with Grantham as a candidate although his defense also regressed much the way Ryan's did in Oakland. I think he would require surrounding himself with positional coaches with more NFL experience to avoid tripfalls, but I don't see the relevance of the 3-4 installation arguement. If that is the case, Crennell is the clear cut best candidate.