out of the past Champs ? On sheer size alone he walks through a lot of our fav's of the past. I'm thinking just the super heavies have a chance, no 230lb or below or 6 3" is dealing with him imo then you have his skills to deal with on top of his size..So for me we are talking Lewis, Klits, who else ?
I think even a faded, post-Holyfield Mike Tyson could have beat the current crop of Fury, Joshua & Wilder. Never mind Lewis or Holyfield