Let's say Martin didn't get that eye injury that forced him to retire. Where does his career go going into the 70s?
He told Howard Cosell in the post fight interview that he wanted to fight Frazier. If that happened in mid 1970 after Frazier-Ellis I, and Joe had not sustained a fractured ankle while performing with his rock group The Knockouts at the beginning of April 1970, I just don't see that going well for Leotis, who also would've challenged Frazier in late 1968, except he dropped a ten round UD in a title eliminator to Bonavena, who got to rematch Frazier instead.
Lyle was an amateur who couldn't have been ready for Leotis prior to becoming a ten round fighter in late 1971. June 1971, Shavers knocked out Chuck Leslie in ten to reach 26-2. As he stayed away from Liston, he might also stay away from Shavers until after Earnie got tired. Martin won thrice in nine rounds. Shavers could have been a fourth nine round victim.
He loses to anyone of note, the alleged 39 year old version of Liston was beating him up and had him down and could’ve beaten him on another day even at that point, Martin had heart and some boxing ability, but not enough to hang with the top dogs.