Just put this up on my blog, a living document pointing to Tampa 2 and Cover 2 links that I can find.
Best quote I've found so far:
We got the Split-60 from Coach “Erk Russell” in 1984. It was the WT-6 on the Strongside and the Split-4 on the Weakside. They called it the “Junk Yard Dog” defense. Coach Russell said that it took the best of the WT-6 and the Split-4.
We got it, squeezed down the Strongside into a 50 that we were more used to and I’ve used it every since as a Gap 5-2. Wish I’d put it in print, but I was just a coaching pup then and just thought it wasn’t anything special.
Now they call it the 4-3 Under and say that Monte Kiffen is credited with it. Same defense that Coach Russell ran at Georgia with a few little wrinkles. I guess some things never change.