West Coast star Elliot Yeo will miss the derby against Fremantle.
Yeo has been ruled out with a leg injury.
He originally sustained it against Port Adelaide last week, and West Coast medical staff made the decision this morning to leave him out.
Yeo has been in superb form down back, and currently sits fourth in the AFLCA coaches votes.
He has been replaced by Jack Redden.
Fremantle has gone in unchanged.