Melbourne co-captain Jack Viney will miss the Demons' next two matches after he sustained a shoulder injury against Richmond last Wednesday.

Viney was bumped by Tiger Sydney Stack during the fourth quarter, and has been diagnosed with a moderate-grade AC joint sprain.

โ€œJack suffered a moderate-grade AC joint sprain during the third quarter following a bump,โ€ Elite Performance Manager David Misson told Melbourne Media.

โ€œWeโ€™ll monitor how Jack progresses over the next week, but our expectation is that heโ€™ll probably miss one to two games.