Until the 1980–81 season, the Vezina Trophy was awarded to the goaltender(s) of the team allowing the fewest goals during the regular season. However, it was discovered that this often meant the trophy went to the goaltender of the better team rather than the individual, so they changed it to offer the Vezina to the most outstanding goaltender, as voted by the NHL General Managers. The William M. Jennings Trophy was created as a replacement and is given to the goaltender(s) playing for the team with the fewest goals scored against them.