I was in a fight in high school and I knocked a kid out, in front of my gym teacher. Not only did I get a 2 week suspension, I got asked to join the local boxing gym and the rest is history.
Funny, I knocked that kid out, but I got bullied in sparring for like a month before I developed any sort of understanding of reach or movement.
It's much easier when the guy you're fighting ain't got a clue how to block a left hook.