Jim Wyatt's report that the Titans are considering Eric Mangini for their vacant defensive coordinator position naturally made me wonder. If Mangini is hired, would the Titans change to a 3-4 defense, where Mangini's experience lies?
My first inclination is to believe it won't happen. Jeff Fisher will be coaching to keep his job this year. Now is not the time to make changes which usually take several years to implement.
The length of time before a successful transition to the 3-4 is complete depends in large part on the pieces you already have in place. When the Packers made the switch in 2009, they already had the big bodies up front that a 3-4 requires, in Ryan Pickett, Johnny Jolly and Cullen Jenkins. They also had Aaron Kampmann, who was able, sort of, to make the change from 4-3 defensive end to 3-4 outside linebacker. The Pack had the good fortune to draft Clay Matthews as their other OLB, and they suddenly had the makings of a good front seven.