i've fought only once with some kid on the block who was 2 grades higher than me in high school. he jumped me from behind and he was kind of fat. i used that to my advantage as i was more agile than him. He'd swing with all his might, I dodged it, he start falling forward, and i'd just grab his arm and throw him down. I never threw a punch, but he knew he wasn't going to get me down.
i avoid a fight at all costs - i'm not a violent person but just tempermental.