During the 1947–48 season, Durnan served as the Canadiens' captain. However, he left the crease so often to argue calls that other teams claimed he was giving the Canadiens unscheduled timeouts. After the season, the NHL passed a rule barring goaltenders from performing the duties of captain, known as the "Durnan Rule." While Roberto Luongo was named "captain" of the Vancouver Canucks in 2008, Luongo had no on-ice rights as such, making Durnan the last goalie to officially serve as captain, and to wear the C on his jersey in the National Hockey League.