Only been in two that ended well.
First guy was typical get in your face being tough with his chest stuck out while talking shit. I put my forehead through his nose and left.
Second guy stood too far away while talking shit for that. I turned sideways to him with my hands down. When he stepped up to swing I judo chopped him in the throat and left when he went down choking.
I learned from getting my ass whipped a couple times before that not to fight. Just end it quickly and leave. Don't stick around. If you don't see the opportunity to end it before it begins, then don't get into a fight at all. Yes, there could have been more than a few scraps, but those were when I knew to simply eat my pride and leave because I would have been fucked up bad. You better be really sure you can end it too. I simply got lucky both times.