For your defense, fight like Bernard Hopkins.
In my experience, it's best to use the sucker punch. It's not manly, but hell, do what you have to, to win. I recommend sucker punching in the throat or kicking him in the nuts. Both of those moves don't work when the fight's already started and he's in his stance, but they work really well when he's still in the talking **** phase. If the fight's already started, you don't want to prolong a fight with someone stronger than you. You don't want to trade blows with someone who hits harder. I say hit him fast and hit him hard. Try to rush him, and overwhelm him with speed and aggression. If it's a street fight, try to use any nearby objects as weapons such as chairs or bottles.
Try attack their feet. As they say 'the bigger they are the harder they fall'. And try to dodge as MANY punches as you can. If you are quick and nimble you should be able to last quite a while and possibly win.
Although, make sure you have a quick escape route as well.
Yeah, you gotta crouch low, bob and weave, get under the jab and explode inside with short, crisp uppercuts or hooks. You can watch how Joe Frazier and Mike Tyson did it.
I know how to fight well, since I like street fighting. I want to know how to win against a bigger person like when they rush at you with their body, I know you can get a clear shot at their face but when can I land good body shots? Yes I can take down a big guy because I have done it but the guy sucked I can take many hits and tire him but that wouldn't work on other big people.
Any Tips are welcomed
