He notably helped the Calgary Flames reach the NHL playoff semifinals for the first time in club history in 1981.

The forward reached the 20-goal mark six times in Vancouver and played for Canada at the 1978 World Championships.

Lever was traded to the Atlanta Flames alongside Brad Smith in exchange for Ivan Boldirev and Darcy Rota on February 8, 1980.

Lever played 1020 career NHL games, scoring 313 goals and 367 assists for 680 points.

[1] On March 9, 2009, Lever was named an assistant coach for the Montreal Canadiens by Bob Gainey after the firing of Guy Carbonneau.