The decline in one-dimensional fighters in the NHL in recent years has been attributed to many different causes. The rise of analytics, mandatory visors for new players and a greater emphasis from coaches on running four lines have all been mentioned as possible causes.
One item that should rank near the top of any list is the newfound credibility of the league’s Department of Player Safety, the agency responsible for handing out suspensions. Tougher punishments have made it more difficult to ice enforcers (who tend to be suspension magnets) while simultaneously reducing how much teams feel they need those players.