Mike Tyson's era before Evander Holyfield moved up wasn't all that hot either.

The 1960's-1970's and the 1990's were the deepest era's in the division....Joe Louis ruled so long he went from a deeper division to a thin division to a deeper division, I mean the guy lost to Schmelling in 1936 and didn't lose again until 1950!!!! When Louis started out there were guys around like Max Baer, Jack Sharkey, Jim Braddock, et al, to the bum of the month club and then to Jersey Joe Walcott and eventually Rocky Marciano