I was just doing some research into Joe Bugner (I know, I have no life)- ...but pretty interesting this guy was in the ring with a WHOLE BUNCH of top-flight heavies (in lots of eras) and he won alot of these fights, and was competitive with even the very best.. He fought from 1967-1999 (!) Here's a list of some of the guys Bugner tangled with: Muhammad Ali (twice) Joe Frazier Henry Cooper Ron Lyle Earnie Shavers Mac Foster Jimmy Ellis Brian London James "quick" Tillis Frank Bruno Bonecrusher Smith Greg Page pretty impressive resume for a guy who never won the championship..