He's still got some power. Clottey was absolutely in survival mode. The Margarito fight probably should have been stopped because he couldn't see. Mosley verbally quit but his corner didn't honor his wishes and the ref didn't hear him. Bradley is just plain tough, look at ruslan fight. Marquez KOed him but was desperate at that point in the fight. Rios cried publicly afterwards. Algieri was down 6 times, depending on ref could easily have been stopped.