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

Khokar Galaxy vs Luisito Espinoza ( ended his career)

 

100%, sir

 

Not sure Loughran had a great chin .. was an exceptional defensive fighter ..

 

Alan had beaten undefeated Ernie Singletary and lost a hometowner to Mustafa Hamsho after Hagler. He also talked a very good fight, saying Sibson had "Borrowed my Titles".
After the fight, Minter talked about his heart being out of the game but I've always felt this was a Boxer trying to explain away a conclusive defeat. I'm pretty sure Sibbo is the only guy to put Minter down for the full count.
Yeah, the Collins fight is a total schooling. Man against boy. I'll bet Collins had a deep conversation with his management about their choice of stepping stone !

 

Can't be a better example of an iron chinned guy getting KO'd brutally.
Roberto was just as iron chinned afterwards too, it wasn't as though Hearns was the start of Duran being chinny, just a crazy one off KO of a legend by another legend.