The team were minor premiers and won a record 21 straight games to take out the championship on March 24, 2013.
The Lions had earlier finished the regular season as minor premiers.
West Coast finished as minor premiers for a third time in 2006, with seventeen wins from 22 games.
Up until 1954 a 'grand final' match was only held if the minor premiers were beaten.
The previous biggest loss by a minor premier was 69 points.
The team that finishes 1st at the end of 18 rounds is declared the minor premier.
They are yet to win a flag but finished minor premiers in 2006 and 2007.
That season the Panthers finished minor premiers and went on to the grand final.
The "curse of the minor premiers" once again came back to haunt the team, however.
They were minor premiers and won the grand final.