Floyd at 130.

[Beanflicker]

Meh he quit twice so he had quit in him.

De La Hoya quit.
Roger Mayweather quit.
Julio Cesar Chavez quit.
Mike Tyson quit.
Vitali Klitschko quit.
Kostya Tszyu quit.
Erik Morales quit.
Alexis Arguello quit.
Sonny Liston quit.
Devon Alexander quit.
Shane Mosley was begging for someone to stop the Pacquiao fight. "I can't move."

Genaro Hernandez quit against De La Hoya a couple years before Floyd fought Hernandez.
Victor Ortiz quit a couple years before Floyd fought him.
Miquel Cotto conceded on his stool a few years before Floyd fought him.

Yeah but how many of those guys were well past their prime when they quit? Pretty much everyone you listed except Vitali.

And Sonny Liston is known as a quitter.