West Coast have kicked a club-record score, beating GWS on the road by four goals to consolidate their spot in the AFLW top eight.
Young gun Ella Roberts kicked a career-best three goals as the Eagles won on Sunday at Henson Park 10.4 (64) to 6.4 (40).
The Eagles' previous highest score was 8.5 against Geelong, three years ago.
It was an important win for West Coast after last weekend's hammering at home from an in-form Brisbane Lions.
West Coast kicked the first three goals of the third term to lead by 39 points and while the Giants rallied, their season is on the brink.
As the Eagles improved to 4-2 in seventh spot, GWS have a draw and three losses from their last four games and are 13th.
The Giants would have been a lot worse off without Izzy Huttington, who starred in defence with 10 marks - eight of them intercepts.
Tarni Evans kicked three for GWS, also a career-best haul.
Adding to their problems, Aliesha Newman was forced out of the game in the third term with a knee injury.
Roberts, 19, was best afield with a game-high 16 contested possessions in her 20 disposals and she also racked up four clearances.
After Isabella Lewis and Roberts kicked the opening two goals of the game, the Giants did not post their first until the last few seconds of the first quarter, through Evans.A six-goal Eagles run, including Belinda Smith's second in her 65-game career, killed off the contest.
The Giants did not kick their next major until 11 minutes into the third, through Alicia Eva.
They made the contest interesting late with three goals in the last term, outscoring the Eagles for the quarter.
But Kellie Gibson kicked her second goal in the last minute, adding emphasis to an impressive West Coast win.
Eagles ruck Tess Lyons stood out with 31 hitouts and Lewis was a prime mover with 23 disposals and seven inside 50s.
Alison Drennan was also prominent for West Coast and Alyce Parker racked up 23 disposals for GWS.
