Matthew Pavlich's season-high eight goals has inspired a western derby demolition of a listless West Coast at Patersons Stadium this afternoon.
The Dockers methodically strangled their cross-town rivals, holding them to a meagre 1.10 in the first half and six majors for the match.
At the other end Pavlich kicked the most goals by a Docker ever in a derby to clinch his third Ross Glendinning medal as best on ground and haul his side to a 65-point thrashing that could have ended the Eagles top-four hopes.
Hayden Ballantyne also chimed in with three goals in a welcome return to form, while Michael Barlow and David Mundy were an industrious key to their side's unrelenting pressure.
The 17.11 (113) to 6.12 (48) triumph was Fremantle's first derby victory since round 18, 2010 and stretched their winning streak to five games.
It has kept them firmly in finals calculations ahead of a testing showdown with Adelaide at AAMI Stadium next Saturday.
The one sour note for Fremantle was the risk of suspension to both Luke McPharlin and Matt de Boer.
McPharlin finished the contest on report for a crunching shirt-front delivered midway through the first term that caught Jack Darling high and flattened the young Eagle.
The All-Australian contender will be at greater risk of a ban with 12 carry over points hanging over his head after being suspended last year for striking in the 34th derby between the clubs.
De Boer is also expected to come under scrutiny from the AFL match review panel for an incident in the second quarter.
The midfielder stuck out his leg as opponent Daniel Kerr attempted to dodge around him just metres from Fremantle's goal line and is expected to have to answer a tripping charge.
Stray elbows from both Pavlich and Clancee Pearce that caught opponents high in separate incidents could also be assessed.
Pavlich was a dominant force up forward, continuing his run of rich form to move into the lead in Coleman Medal race.
The Eagles could only rue the loss of their own captain Darren Glass to suspension as Pavlich carved up his direct opponent Eric Mackenzie.
Pavlich was given too much space inside-50 and capitalised with the first two and the final two goals of the second half as Fremantle bullied their way to a match-winning break.
West Coast were comparatively flat and lacked the usual zip provided by Luke Shuey, Andrew Gaff and Scott Selwood.
Daniel Kerr (hamstring) and Dean Cox (ankle) both overcame injury concerns to play.
But where Kerr found the ball at will, Cox and ruck partner Nic Naitanui had no impact in a significant victory for Dockers coach Ross Lyon.
Ballantyne had a golden opportunity to open the scoring, but badly pushed a set shot across the face of goal.
It took Pavlich to kick the opening goal after marking a well weighted pass from Michael Barlow 25m out directly in front.
The Fremantle skipper ran into an open goal for his second five minutes later before Jack Darling replied with West Coast's first and only goal for the opening term.
The Eagles failed to manufacture another goal from a clutch of opportunities.
At the other end Tendai Mzungu and Michael Walters both jagged majors to give Fremantle a 15-point lead at the first break.
Darling was forced from the field for treatment early in the second quarter in a worrying sign for West Coast.
The young forward needed his right elbow strapped after having the joint wedged between Mackenzie and Naitanui.
The Dockers seized the advantage in the meantime.
Pearce kicked truly from long range after the Eagles were left to rue a costly 50m penalty.
Pavlich then booted his third before nailing another clutch goal on the stroke of half time to give his club a considerable 32-point lead.
The margin had blown out to 44 points 10 minutes into the third quarter when West Coast threw their best shot.
They closed to within five goals on the back of quick majors to Quinten Lynch and Ashton Hams to send a shiver of fear through Fremantle fans.
Any doubt proved unfounded.
Crowd favourite Ballantyne proved his love of derbies by clinching the result courtesy of two running goals that had the game won by the final break.
FREMANTLE 4.2 7.6 15.9 17.11 (113)
WEST COAST 1.5 1.10 5.11 6.12 (48)
GOALS - FREMANTLE: M Pavlich 8; H Ballantyne 3; T Mzungu, M Walters 2; C Pearce, D Mundy. WEST COAST: J Darling 2; N Naitanui, Q Lynch, A Hams, S Hurn.
BEST - FREMANTLE: M Pavlich, M Barlow, D Mundy, C Pearce, N Fyfe, J Griffin, S Hill. WEST COAST: D Kerr, A Gaff, B Waters, J Darling.
INJURIES - WEST COAST: J Darling (elbow), B Sheppard (thigh).
REPORTS: L McPharlin (Fremantle) for forceful front-on contact in the first quarter.
UMPIRES: S Stewart, S Meredith, S Jeffery.CROWD: 39,694 at Patersons Stadium.