GWS will be without co-captain Phil Davis and star midfielder Josh Kelly when they host St Kilda at UNSW Canberra Oval on Saturday.
Davis will miss another week with a badly rolled ankle that he suffered in round five, while Kelly has been withdrawn due to an adductor injury he picked up last week.
Matt Buntine and Jackson Hately have been named as the pair's replacements, with Hately coming in for just his second game of AFL in his debut season.