I think it's Pruitt
I would maybe say Majors, but I don't know enough about that time period. How exactly did Battle ruin it? Always seemed weird it took Johnny so long to get it rolling again.
Dooley still had studs on his roster that were from Fulmer and Lane.
Butch still wasn't that far removed from the glory days then he had all those legacy players.
Pruitt though? The 4-8 season was the worst in Tennessee history. The way Butch botched the 15' and 16' seasons and then completely collapsed in 17' was absolutely soul crushing. Pruitt was left with small players on the LOS. Super young team and........JG
No portal, small linemen, youth, followed the most epic collapse in program history and had JG at QB!
Heupel had the portal, inherited a much stronger LOS with guys on it that are still with us to this day. Lots of veteran guys, Byron Young was brought in by Pruitt and Hendon Hooker.
Sorry, Heup would not have been nearly as successful with JG. Not a chance. Hooker was in fact a good QB at Virginia Tech.
Yes the NCAA infractions were terrible and replacing portal players sucked, but he retained a lot of solid veteran players and Mr Hendo Cinco.
For me, it's Pruitt because the QB situation puts it over the top.