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.
— AFL (@AFL) July 11, 2021
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.