West Coast was overpowered by a more determined Greater Western Sydney as the Giants finished off their home campaign with a convincing 54-point win.
Needing a win to maintain their slim hopes of a wild card spot, the Giants kicked nine straight goals as they charged to a 16.15 (111) to 7.15 (57) victory at Engie Stadium on Sunday.
To snare a spot in the finals, the Giants need Carlton to lose on Sunday afternoon against the Western Bulldogs and in the final round, while the Giants also need to beat Adelaide next week.
They turned a 16-point first-quarter deficit into 35 and 47-point leads at half and three-quarter time.
West Coast slumped to a 10th straight loss despite winning the clearances and racking up the same number of inside 50s.
Their lack of accuracy across the two middle quarters proved costly with the Giants kicking 8.5 to the Eagles' 0.9.
With questions over the futures of Toby Greene, Jesse Hogan and Jake Stringer, Greater Western Sydney showed it had other goal-kicking options up forward, although Greene contributed two majors.
Callum Brown booted four goals, Aaron Cadman three and Harvey Thomas and Riley Hamilton two each.
Both teams kicked five goals in a frantic first quarter in which West Coast had seven more inside 50s.
The Eagles dashed to a 16-point lead on the back of four straight goals, with Tom Cole involved in all of them, as the visitors scored primarily from back-half chains.
Greater Western Sydney retaliated by kicking four of the last five goals of the term to lead by one point at quarter-time, with four majors coming from clearances.
The Giants carried the momentum into the second quarter, kicking. 6.2 to 0.5, with their running game and drive from the back half cutting the Eagles apart.
Eagles spearhead Jake Waterman had another mixed outing, kicking 2.3 and Liam Baker also kicked two goals.
Tim Kelly (28 disposals) and Harley Reid (25) best to keep the Eagles in the contest, both winning eight clearances, while Jack Graham laid eight tackles while gathering 26 touches.
Bailey Williams won the ruck duel with 39 hit-outs and seven clearances of his own but West Coast couldn't capitalise.
Giants defenders Lachie Ash and Lachie Whitfield tallied 36 and 33 touches, respectively.
The Eagles finish off their 2026 campaign in the final game of the home and away season against Hawthorn next Sunday evening.
GREATER WESTERN SYDNEY 5.2 11.4 13.9 16.15 (111)
WEST COAST 5.1 5.6 5.10 7.15 (57)
GOALS
Greater Western Sydney: Brown 4, Cadman 3, Greene 2, Thomas 2, Hamilton 2, Gruzewski, Angove, Stringer
West Coast: Baker 2, Waterman 2, Murdock, Cole, Hough
BEST
Greater Western Sydney: Ash, Greene, Whitfield, Cadman, Brown Thomas
West Coast: Kelly, Graham, McCarthy, Reid, Williams, Waterman
INJURIES
Greater Western Sydney: Nil
West Coast: Nil
LATE CHANGES
Greater Western Sydney: Toby Bedford (back), replaced in the selected side by Conor Stone
West Coast: Nil
Crowd: 7345 at Engie Stadium