If a boxer was going to fight for your life who would you pick?

[Gandalf]

Joe Calzaghe. He couldn't be beaten.

Correct , not one club fighter , or geriatric fighter could come close to beating him.
Do you think his slaps would hold off the assailant. ?

Of course. It doesn't matter how hard he hits as he will outwork the opponent regardless. Joe Calzaghe was the greatest fighter of all time. He would have bamboozled any fighter past or present. An enigma with a style that cannot be trained for as nobody else fights like that. Andre Ward would have been Lacy'ed.