Cases of "Iron chinned" fighters being KO'd or TKO'd early.

José Luís Ramirez was stopped just the once in 100+ fights in the second round by Ruben Olivares.

 

Holmes in 4 (although he was past it & had been retired for 2 years).

 

Commey in 2

 

Greb had a head of concrete and was finished early in his career

 

Witherspoon when he got stopped by James Bonecrusher Smith in the first round.
If you believe Liston did not take a dive in the second fight, then sonny, Who took Cleveland's bombs with going down, should be up there too.

 

Randy Cobb v Dee Collier. But that one had a very bad odor about it.

 

Doug DeWitt got KO'd by Nigel Benn; it was shocking at the time since Doug had done very well against Tommy Hearns. although he'd been TKO'd before by Jose Quinones and Sumbu Kalambay. The NY crowd didn't know about Benn's power.

 

Come on that was in his 6th fight out of 3,232 fights. He was 7 years old at the time. His other TKO loss was due to a broken arm suffered in the match.

 

Your forgoting the fact that greb faught all of his fights in a wheel chair with no wheels (something we only found out after he died)

 

And was blind in one eye (which he was!).

 

Most brutal KO of all time, IMHO. Frighteningly fast and brutal even in slow-motion.

 

No one has said Paul Williams yet? Huh. That was like the first example that sprung to my mind.

 

Jack Johnson was knocked out in the third round in his fight with Joe Choynski.

 

It wasn't granite but it wasn't glass either. The only people to knock him out were Foreman and Tua. If that makes someone weak chinned getting KO'd by 2 ATG top 10 punchers then you have strange criteria.

 

Michael Moorer hardly had an iron chin. I would rate his chin at about a "C." Any good punchers who connected on him dropped or stopped him.