The First Rule of NHL fight club . . .

Violence in pro hockey and the code of honor that regulates it.

Unknown to many a neophyte hockey fan(like myself). There is a unwritten code of conduct about who fights and when. It involves escalation of of the unwritten rules and then an elaborate dance of who fights who and when. Most interesting to me is the underlying benefit that teams with a good enforcer will gain extra room on the ice for their smaller finesse players.