Wilder is probably the best example of this thanks to his power carrying him for so long which I don’t blame him for using. Are there any examples of others doing something similar to him?
Sergio "la maravilla" Martinez...guy was a phenom for what he was able to accomplish coming from a soccer background and his age. Too bad he cashed out against cotto but his KO of Williams and the beatdown he gave JR were incredible,that 12th rd against Jr was a rd i"ll always remember!
James Tony started after high school at like 17 or 18, which is considered late in boxing.
Anthony Joshua started at 18
Dwight Muhammad Qawi started around 24 in prison
Antonio Tarver started at like 20.
Sergio Martinez started at 20.
Ray Mercer started really late at like 25.
Sonny Liston, Rocky Marciano, Ken Norton all started late at like 23.
It is possible but I think after 25 it's virtually impossible.