The only two times that it has worked well that I know of was 1) at Nebraska, when DeVaney announced his retirement at the end of the season and the school announced that Osborne would be the next guy, and 2) Kentucky, with Joker Phillips taking over as planned. Jimbo Fisher did take over at FSU, but Bobby wasn't ready and there were some problems, and of course Muschamp wasn't ready to wait on Mack.