Putting a value on a backup goaltender can be difficult because different teams need backups for different reasons. Some teams need 15 games while others need 25 games from their backup. Some clubs need a top tier backup in the case of injury to the starter, while some need a veteran presence to guide a young netminder. Furthermore, some teams have backups so good that they could fetch a hefty return at the trade deadline. To determine the best backup goaltenders, we look at not only the numbers but the goalie's role.