This might bore some, but bear with me for a moment. In 1991, when this fight takes place, Saad had not won a fight in over three years. The lone win was against an 0-1 opponent. His record in that period of time was 0-4-1, including being stopped two times. He was 37 years old, and was absolutely and completely shot, no doubt about it. You can easily argue that he was well past his past almost a full decade before 1991. But here we saw a very old Saad fighting an obscure guy who took noted beatings before finally succumbing against plenty of noted fighters from his own time period. The hard hitting Andrew Maynard took 12 rounds before he could finally get the durable Chavers to fold on a technical knockout. Cruiserweight Al Cole took six rounds, and that was on a closed eye. He fought a prime 34-0 James Toney and was only stopped after a one sided drubbing that took 9 rounds, when the corner threw in the towel. My point is, that the only person to ever knock this guy over, none the less down and out and into another space/time continuum... Was an ancient Saad with no other tools left. Power really was the only thing he had left. The man must have truly been a gifted puncher to be able to put a durable guy like this out with such a punch. This content is protected
Shavers may have taken a dive. Or his punch resistance could have deserted him after the beatings you mentioned. Saad had shown little punching power since his '86 comeback.
If that happened in the 1930’s: - Both boxers would be suspended - The president of the commission would claim that he could beat up both fighters at the same time. - Modern fans would call it an invisible punch.
The Toney fight took place after this match, where Chavers absorbed everything an undefeated Toney could throw his way for 9 rounds before the towel came flying in. Doesn't look like a thrown fight to me. Chavers legitimately looks knocked silly, dangerously out of it and unable to rise.