He would get embarrassed. Even a 2 year boxing experienced Lesnar would lose badly to a guy like Lyakovich, Helenius, or even Kevin Johnson. And I think those 3 guys are **** form right now. Lesnar has NO business in a boxing ring. He would just further embarrass himself.
If brock can't literally handle somebody, controlling them, then he's done. I think I could win a striking battle with him. lol Why he stayed on his feet, his largest weakness, is beyond me.