Ok, these are going to sound obvious but...
1st, as the saying goes "never try to outbox a boxer"
2nd, who's gonna just stand in front of Mike Tyson and let him TEE OFF.
3rd, don't know how many Leg Kicks Mike was used to receiving during his sparring but I say bash away if your allowing it.
4th, if you can't stand with him... do your best to take him down. Off his feet he won't be able to punch you as he has been training.
... OH you don't want that?
Ok, i'll just wait till he punches me, then I'll magically yield to his offensive energy and then set him up for an explosive "Parting Wild horses Mane". That'll fix em.
.....
Seriously, nobody should even try to fight unless they at least have enough "Offensive Methods" of some sorts that can actually hurt someone. (meaning serious striking power or scary grappling / locking skills). Otherwise, you won't even get any respect.