http://www.youtube.com/watch?v=tFG6Do4IcuQ stallone said ring realism occasionally led to trouble in the filming of Rocky II. One of his sparring partners, for example, was former lightweight champion Roberto Duran. "A few times, it got out of control," he said. "You're sparring and you say to yourself, 'Hey, maybe I can go with this guy.' Then you trade a few shots, and you realize you're an actor again."
Thats pretty funny...Stallone said he went in with Earnie Shavers once and Earnie hit him with a jab and almost knocked him out....
I got 7 min of tyson sparring with oliver mccall.........its in the late 80s u can hear kevin rooney.....its on dvd though.