I think thats him right @ 1:22, apparentaly he was pretty insane back in his day I never knew much about him just heard good things. I found him on this vid.
By the time Mark Johnson fought Rafael Marquez he was already faded and was thinking about retirement. Even though he was past his prime he gave Raf all he could handle in the first fight, and after losing to Raf in the rematch, he was able to rebound with a win over over Fernando Montiel.
In his prime, he was as good (if not better) as Floyd, Roy and Shane.