People say Buster Douglas had no chance and beat Tyson but the big difference here is that Buster could throw crisp, straight shots.

I would barely give Chisora a chance if he could straighten his shots to make them more powerful once he is on the inside to maybe keep Vitali honest (although Lennox couldn't keep Vitali off even with that hellacious uppercut).

Also there wasn't that huge size disparity between Tyson and Douglas..

I can't see Chisora doing it even though I hope he does..the great thing about boxing is that we've all had to eat humble pie about some fights where we gave one fighter no chance - i.e Oscar vs Pac, Pac vs Marquez 3 etc