In recent times, it's Joe Calzaghe - his stamina was phenomenal. He would still be throwing clusters of punches in the last round with not let up whatsoever.
All-time, it has to be Henry Armstrong - he was a cyborg with unbelievable stamina.
Honourable mention to Rocky Marciano.
Henry Armstrong. Everything I've read about his fights described nonstop action, a relentless pursuer and puncher. I'm trying to find any article about an incident in the 1980s, when three punks tried to mug Henry and wound up on their backs. He was 70 at the time. Ring Magazine had a short paragraph about the muggers but I can't find it.
Muhammed Ali was also in top condition until the late 1970s. He fought some thrilling 15 rounders with Frazier and Norton. Being such a smart fighter, Ali had many short fights because he'd KO his opponent well before the 10th.
Rocky Marciano had possibly the most outstanding conditioning in boxing history setting and maintaining a non stop punch out put almost as if he had his opponent ready to go. Archie Moore later after he retired said that any where Rocky would hit hurt, the arms, shoulder, elbows it just didn't matter
Muhammad Ali used to fight 15 rounds with no problem.
My question is if there has ever been a boxer that could go on for 12 rounds nonstop, that could finish the 12 rounds and keep going. Has there ever been such a boxer?
