The Bunbury Bulldogs were determined to bounce back following their shock 14-point loss to Busselton in last month's semi-final.
Playing at Hands Oval, the side showed no mercy against the Collie Eagles in Sunday's preliminary final blockbuster.
Bunbury's Cameron Lamonaca opened the scoring with the first of his three majors, before Eagles' forward Joel Houghton closed the gap.
Notching up another three goals, the Bulldogs moved out to a commanding 22-point lead at the first change.
Efforts from Jaxon Pitts and Dylan Clarke brought the Eagles back from the brink midway through the second quarter.
Bulldogs' forward Jordan Adamson-Holmes responded with the first of his two goals, before Lamonaca lined up to kick his second.
Bagging two quick goals, Collie's Hayden Yarran worked to reduce the deficit to just nine points, 6.8 (44) to 5.5 (35), at half time.
Spurred on by coach Jamie Nani, the Bulldogs picked up steam and booted an impressive five goals to one in the third term.
The Eagles eventually found their footing, and did enough to put away four goals to three in the fourth quarter.
However, thanks to efforts from Jett Rigby and Jessie Gribble, Bunbury remained in front up until the final siren.
Kicking his side's final goal, Cameron Hay steered the Bulldogs to a well-deserved 14.14 (98) to 10.11 (71) victory in front of die-hard fans.
With a four-goal haul, Bailey Coshott guided Busselton's Colts side to an emphatic 10.6 (66) to 6.7 (43) win over Donnybrook.
A stunning second-half performance saw Eaton's Reserves squad cruise to a resounding 9.2 (56) to 4.8 (32) victory over the Bulldogs.
