Hey look Khan did quit but that is the only time I have seen him do it and he has gotten his ass kicked before. I mean Duran quit and for being clowned on takes a lot of heart to even get in a ring come on people. Crawford has beaten the shit out of anyone he has fought and they have not been close fights hope the top guys will get in ring with him at some point in time. Khan has a following and is fun to watch like car crash that is why Crawford the guy brings in money.