It looks like West Coast star Andrew Gaff will be facing a lengthy suspension after this hit on Dockers rookie Andrew Brayshaw.

The incident happened off the ball in the third quarter of Fremantle and West Coast's Derby clash at Optus Stadium and may have broken Brayshaw's jaw.

The young Docker came off the field and was spitting blood and holding his jaw together.

Gaff, one of the Brownlow favourites, would be deemed ineligible to win the award should he face suspension, which appears to be a certain outcome.