Scott Selwood says he is almost certain to miss Sunday's big clash with Fremantle at Simonds Stadium.

Selwood suffered a hamstring injury in Thursday night's loss to West Coast in Perth.

“I got a little tear in my hamstring,” Selwood told K rock’s Fresh Daily.

“I got pretty good scans results to say it’s not too bad and hopefully I won’t miss too much footy.

“I’m going to try and push to play as soon as possible.”

However, the prognosis for Nakia Cockatoo, who also suffered a hamstring injury against the Eagles, is more complicated.

“That’s Nakia’s second hamstring in four weeks, so he’ll probably spend a bit more out than what I will,” Selwood said.

“[The medical staff] will make sure that it’s really ready to go so it’s good to go for the back half of the season.

“Nakia’s probably got a bit of a different path to me, but hopefully we can get him back as quickly as possible as well.”