Gold Coast's Hugh Greenwood has been subbed out of today's game against GWS.
Greenwood hurt his knee in a marking contest and was taken from the ground and sent straight into the rooms.
He was then replaced by medical sub Rory Atkins.
Greenwood has played 14 games in 2021 and averages 18.8 disposals and 6.7 clearances.
Early fears suggest Greenwood may have suffered an ACL tear.