Fighters with the most one punch knockouts.

[IamInuit]

1. Joe Louis
2. Ray Robinson
3. Thomas Hearns
4. Bob Foster
5. Sandy Saddler
6. Earnie Shavers
7. Sam Langford
8. Stanley Ketchel
9. Jack Dempsey
10. Mike Tyson

That is what the Ring has on record for all time. Not sure how both Young Otto or Young Stribling are not on there but that's the list

Sorry, should have read all the posts.
One of the things that has always amazed me about many fighters, and specifically punchers, is their body type, thin. Hearns and Foster were razor thin, Saddler looked like a stick figure, and Robinson never looked muscled/intimidating.
Out of the first 5 fighters on that list, 4 would be considered thin. Don't mess with thin guys.
I'm not asking for a lecture about punching power, just talking.

Agree 100%. Maybe its bone to flesh density or something. No lecture from me. I'm not qualified.