Probably 'Joe' or 'Jack', but can anyone come up with some different ones? Benny? Lynch, Leonard, Bass, Paret etc... Carlos has some good suffixes.
Mike Tyson Mike Weaver Mike Moorer Mike Spinks Okay, some of those guys go by Michael, but its worth a shout
Well as long as you're stooping to include Cinderella man then: James Buster Douglas James Bonecrusher Smith James Quick Tillis James Broad Axe Broad