Cain vs. Abel.
Really hard question from yours. I know Mohammad Ali is the best boxer of the world ever but I don't who was the first boxer ever also I think no one can make the right answer.
man this is a great question. Probably the first "boxer" could be considered the first guy to throw a punch at someone else for a reason other than self defense.
Ancient Greece
I just want to ask, who was the first boxer who ever fought?