Who beat mohammed ali but lost to Mike Tyson?

The answer is Larry Holmes. He was a bum with an ego, not a real champion. First off, Muhamad Ali was not just over-the-hill in boxing terms but throughout that fight, his hands were shaking, and not because he was mocking the other guy egging him on daring him to attack him, when fighting Holmes Ali clearly had Parkinson's disease. In addition to having Parkinson's, he was also out of shape, in a later fight Ali managed to get himself in shape, even attaining a youthful look, but, sadly Spinks ended his career.