NHL Overview of Four-Man Officiating System

The National Hockey League introduced the four-referee system – two-referees, two linesmen – for the 1998-99 season.  Each team played 20 games under the oversight of a four-man crew. The following year, each team played 50.  In 2000-01, the NHL went full-time with the four-man. NHL Director of Officiating Stephen Walkom takes us through an intro to the system, from communication to positioning and responsibilities.     Other Leagues The AHL introduced the two-referee system in the 2010-11 season, with 25 percent of regular season games and all playoff matches officiated by four-man crews. The league’s goal is to fully transition...

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