If the losers didn't like the outcome, there were two options: punch the winners in the stomach or take the ball and go home.
It worked on our playgrounds because a punch in the stomach isn't the end of the world, exactly. You could punch a kid, or he could punch you, and half an hour later you could both ride your bikes to a convenience store for a Slurpee. You could always find a ball somewhere. There was always the next afternoon to get out there and play.