Fighters who ruined the most fighters

Felix Trinidad Ruined Vargas, Reid, and Joppy.

 

Mike Tyson on Spinks and Bruno.

I think that if Spinks or Bruno didn't fight Tyson - they'd had a few more fights.

 

Hopkins- Pavlik and Trinidad

Manny Pacquiao- Hatton, Delahoya, David Diaz

 

JC Chavez ruined Meldrick Taylor. I think there are a few others at lighter weights.

 

Walcott, Charles , Moore an you can add Louis as well were all getting ready for the social security old folks retirement home when Marciano beat them

 

100% Mr Marciano

 

Kosta Tyszu …I remember Jake Rodriguez said in an interview …” I had a good chin until I fought Kosta “…….. add in Sharmba Mitchell and Miguel Angel Gonzalez

 

Marvin Hagler.
Even guys he didn't knockout seem to never be quite the same as before he fought them. Leonard, Duran probably Hearns could fit into this category. As well as John Mugabi

 

I would argue and say Hearns as well since Leonard and Hagler weren't the same after they fought him.

 

Marciano...responsible for 13 permanent retirements...almost killed Carmine Vingo...Vingo never fought again...Rex Layne and Lee Savold had their teeth smashed into their gums...had the teeth removed...LaStarza had bone damage and ruptured blood vessels in his arms after their fight in '53...he had surgery to remove the blood clots that formed...some guys NEVER got over a beating from Rocky Marciano. He was a wrecking machine...AND...he NEVER quit!

 

Well yeah, but they already had one foot out the door.

 

Everyone Harry Greb fought retired afterwards.

 

Hearns-Cuevas

 

Hearns literally damaged Leonard with that jab to his eye. I'm not sure if he ruined Hagler but maybe. He still showed an iron chin vs Mugabi.