Gary Rohan's season is in doubt after the Sydney Swans forward injured his knee in the first half of Saturday night's elimination final against Adelaide at the SCG.

It wasn't the end of the bad news for the Swans as just moments before half-time co-captain Jarrad McVeigh was seen limping and later left the field to receive treatment on his left calf.

Should the Swans win against the Crows, this setback could put McVeigh's finals campaign in doubt.

Rohan's injury came when the speedster flew for a mark in his defensive 50 in the dying moments of the opening half and landed clutching his right knee.

It was hard to tell whether the injury was sustained with the collision or upon landing, but play was stopped for three or four minutes while he was stretchered off.

The Crows have had their share of bad luck as well, with Jake Lever appearing to cop a corked thigh after getting in the way of Lance Franklin in a marking contest and not returning for the final 20 minutes of the half.

Daniel Talia appeared to sustain a groin injury but returned the field with severely restricted movement.