West Coast's Jeremy McGovern out, Jack Darling may play defense; Fremantle's Alex Pearce and Michael Walters injured.

West Coast defender Jeremy McGovern is out of the western derby against Fremantle, raising the possibility of Jack Darling taking a defensive role. Meanwhile, Fremantle captain Alex Pearce will miss 4-6 weeks with an arm fracture, and Michael Walters is sidelined for 3-4 weeks with a hamstring injury. West Coast interim coach Jarrad Schofield hinted at Darling's potential defensive role.