'Doesn't look good': Brisbane's Dan McStay subbed out of final against Melbourne following friendly fire

Lions forward Dan McStay was left bloodied and forced out of the match after copping a knee to the face during Brisbane's qualifying final against Melbourne tonight.

McStay's night lasted just five minutes after taking on an accidental knee to the face from teammate Nakia Cockatoo during a marking contest.

The 26-year-old was seen with blood pouring from his nose as trainers rushed over to help the forward off the field.

McStay was subbed out of the game just moments later for midfielder Rhys Mathieson.

"Daniel McStay is in a lot of trouble. He doesn't look good," Richmond great Matthew Richardson said in commentary for Channel Seven.

Boundary commentator Mark Soderstrom added: "In all sorts of trouble from that friendly fire."

"As soon as he got hit trainers were out there, doctors and so forth. The umpires as well, you can see they're all shaking their head.

"He's in a fair bit of trouble at the moment getting sorted."