What kind of rules do gang members need to fight?

The gang members require rules that have been agreed upon before the fight.

They lined up silently, facing us, and we lined up facing them. I looked for Randy but didn't see him. I hoped he wasn't there. A guy with a madras shirt stepped up. "Let's get the rules straight--- nothing but our fists, and the first to run lose. Right?"

Tim flipped away his beer can. "You savvy real good."