I think the Foreman destruction of Frazier was the most shocking win in Heavyweight history, not because George was an underdog but due to the fact Frazier was unbeaten and having had a win over Ali in 71 was universally accepted as the true Heavyweight champion! Then along comes George and makes Smokin' Joe look like an amateur club fighter well out of his depth! I only just watched this fight again and i still cannot believe how a great fighter like Frazier got smoked ( I couldn't resist it) by big George.