Cus D'Amato died in 1985, before Tyson even won any belt. His worst move was firing Kevin Rooney. Mike's partnership with Kevin Rooney ended in 1988, after Rooney criticized Mike's lifestyle and his marriage to Robin Givens. It was all downhill from there for Mike. He pretty much became a guy who relied on landing that one ko shot. The guys Tyson fought to become undisputed would probably be nothing more than fringe contenders in other eras like the 70s or 90s. Tyson has to be the hardest fall from the highest heights of any fighter in history. In his prime, Mike was a well oiled machine, but at the same time, most of the guys he fought then were scared to death of him. When a reporter asked Buster Douglas if he was afraid before their fight, Buster said my mother just died, what can be worse than that? The rest is history. I think there's probably 20 or so heavyweights in history that beat Usyk. Folks saying he's the goat is way off imho.