frazier forced him to dig deep. >> when he began, his best skill was to avoid a punch, and towards the back end, he was revered because he could take a punch. >> jim brown, you were in zaire at the time for that foreman fight, and i love there was some references as he was doing rope a dope, he was winking at you rinkside to let you know, hey, everything is okay. i know what i'm doing here. take us back to that scene of the weeks in the run-up there that you were with him. >> i was the color man, and david frost was the play-by-play announcer, and i had gone to george foreman's camp to spar with him. and i saw foreman hit the heavy bag. and i refused to spar with him because of the way he thought the heavy bag, i thought, my goodness, if he hit me, it would break my ribs. i went to ali's camp. i said, look, you're my friend, but i don't know about that george foreman. he hits awfully hard. i'm with you, but i don't know if you can beat him. when he started to win in the ring, he came over and said, big fella, what do you think now? and i thought, this guy is unbelievable. in the middle of a fight, he's going to tell me how wrong i was when i said