Carlos Monzon - ate, slept, breathed, went grocery shopping tough. No soft side existed in this guy. I never heard, read or saw anyone say he was nice guy. There were faster, more powerful, better boxers, but his focus was victory. His conditioning superb. He didn't come into the ring filled with anger. He just calmly, plainly, hated the guts of anyone who opposed him. To maintain that for 15 rounds takes a very special fighter. Throughout his career I despised him. Wanted to see someone truly beat the snot out of him. That puts him high in my book.
Hands down Marco Antonio Barrera. Was beaten twice by Junior Jones. Came back 4 years later with more skill and was robbed on the cards against Morales. Then after getting robbed moved up to 126 and schooled Hamed. Then beat Morales. Then he got blitzed and stopped by Pacquiao. Then comes back and beats the tar out of Morales. Nobody bounced back from losses like him.
Well Pacquiao was always the most rugged and physical fighter in the ring. Dont get me wrong he was tough, but most of his effectiveness just came because he was a freak of nature.
Joe Calzaghe - any style he overcame. a true winner. Constant injuries throughout his career, for most of his career not getting the limelight and money that his talent and achievements deserved. He trained out of a SHED in the Welsh valleys for the majority of his career.
Youre right in the fact Floyd knew he was going to win before the fight LOL He'd got his agreement with the NSAC , USADA & Vegas boxing officials asking only that he be standing at the final bell & he would not be allowed to lose. The part claiming Floyd's mental toughness is absurd