Craz thing is toda it is hard to judge when or why a fighter is shot. We have top notch guys at over or near 40..Many champions in their 30's...Most of the P4P list is at or over 30..An age when you were considered aging 40 years ago....Then again those guy's took more abuse....Lighter gloves longer fights,,A big appeal for me about the older fighters is they were great naturally...No supplements..No state of the art equipment, Stuff like that does make a difference...I think once a top level fighter starts to stuggle against opponents he would have once blown out or starts losing more than winning..Either hang them up or if they wont come to grips someone should take away their license.......Nothing bothers me more than to see a once great fighter become a punching bag for guys not even worthy as sparring partners when they were in their primes