I would have to say Mercer-Morrison even though that was a TKO. There are a million 1 punch KO's but they mostly look the same. There is something savage about hammering someone who is out on their feet and defenseless.
tbh canelo's ko over amir khan was really bad... i thought khan died i know he was a blown up welterweight, but it was still an absolute monster shot
Mercer Morrison was one of the few times I was genuinely worried about a fighter being stopped brutal.
One punch knockouts: Jackson vs Graham McClellan vs Williamson Hearns vs Duran Robinson vs Fullmer Lewis vs Raham Brutal: Williams vs Jack Mercer vs Morrison Whitaker vs Hurtado Griffith vs Paret ****ey vs Norton