West Coast have recorded their first win at Optus Stadium after kicking six unanswered goals to come back from 15 points down and claim a 15-point win over an injury-cruelled Geelong.
And the news got worse for the Cats, who could be without Gary Ablett junior in coming weeks after he injured his right hamstring in the opening minutes of the final term.
The Eagles also have their issues, with Liam Ryan having to be carried off the ground after kicking the goal to put his side ahead in the dying minutes.
The Cats trailed by 32 points at halftime on Sunday but booted six goals to nil in the third quarter to turn the contest on its head.
Cameron Guthrie (ankle) and Nakia Cockatoo (knee) had already gone off injured by that stage. And when Ablett pinged his right hamstring while running for the ball early in the last quarter, Geelong were down to one fit man on the bench.