I don't really have a problem with it honestly. At least they are fighting each other on a level playing field, and I seriously doubt either would plan on fighting on in victory.. I'm sure Nelson is just doing this as a one time deal. The ref should be looking very carefully at each guy as well, how they react to being hit etc. I couldn't imagine a commission letting one of them take a lot of punishment. I say let it happen, should be an entertaining event as long as noone gets hurt.