Fremantle coach Ross Lyon is optimistic ruckman Zac Clarke will be fit to play in Sunday’s western derby against West Coast at Domain Stadium.

Clarke hurt his knee in last week’s win over Geelong, but Lyon says scans have cleared him of any damage.

The Dockers will be without suspended goalsneak Hayden Ballantyne, while Eagles midfielder Scott Selwood has been ruled out for up to six weeks because of an ongoing ankle issue.