I wonder what Muhammad Ali is up to ITTL? Without being absent from the sport for several years due to dodging the draft (1), he probably is the undisputed king of boxing ITTL...
(1) One might disagree on this, but at least Ali was straightforward and honest as to why he refused to go to Vietnam, and was willing to take the punishment for it...
Ali not losing 3 years "might" butterfly away his Parkinsons as if he didn't get more or less banned from boxing he would have made enough money to retire at a much earlier age. By the end of his career in the OTL, he had been hit 200000 times which surely attributed to his later illness. One possible thing with MLK not dying is Ali could be convinced that the Nation of Islam does not have his best interests in mind and could split from them earlier which means that a large part of his money isn't lost to them. I could see Ali maybe even run for politics being convinced that now that the black community has the same rights as whites that someone will need to defend them and who better than the Louisville Lip.
(Sorry if this makes no sense to anyone I just finished work after 18 hours and tend to ramble on)