WEST Coast forward Jamie Cripps has a suspected fractured jaw as a result of Alex Silvagni's off-the-ball elbow, but coach Adam Simpson said he deliberately did not watch a replay of the incident to avoid making comment.

Silvagni was reported during the second term of Sunday's Western Derby for a crude hit that occurred 70m off the ball.

Cripps had to be helped from the ground by the trainers and was subbed out for 20 minutes under the concussion rule.

He returned to play the entire second half but Simpson said his small forward was very sore.

"Crippa's got probably a fractured jaw," Simpson said post-match.   

"We wouldn't have put him back on if it was a broken jaw. But there might be a fracture there. He's pretty sore at the moment.

"I deliberately didn't watch it. But I've heard a lot about it."

Fremantle coach Ross Lyon also said he did not see the incident.

"Well, there are two things," Lyon said.

"Once he is up before a tribunal, I have an inability to comment.

"And secondly, I didn't see it."

The Eagles produced a mighty performance to beat the Dockers by 24 points on Sunday considering the personnel issues they continue to face.

They entered the game without Nic Naitanui, Mark LeCras and Jeremy McGovern and lost key defender Will Schofield with a sore left hamstring in the third term.

Scott Lycett also suffered an injury to the posterior cruciate ligament in his knee early in the game but continued to play.

"There were a few wounded boys," Simpson said.    

"There's three or four guys who have probably had injuries that may restrict them to play next week, who stayed out there. That was really pleasing."

The Eagles are set to regain LeCras for next Sunday's blockbuster against the Western Bulldogs at Domain Stadium, but Simpson said he is unsure whether Naitanui would be available after missing the last two matches to due the death of his mother.

"We're hopeful on Nic," Simpson said.

"We'll see how he comes back (from Fiji), see what state he's in. He's not due back until Monday or Tuesday. We'll see how that week pans out."

The greater concern for Simpson is the health of his defence given the injury to Schofield.

"It's a worry," Simpson said.  

"We've got a few worries, with McGovern as well. I think we played with six small defenders in the last quarter. So that's a challenge, because teams scout that and try to expose.

"We understand that. It was probably a good tick for our backs. But the pressure we put on in the midfield helped that until the last quarter and a bit."

Simpson said his side has taken an enormous amount of belief from their performances against the Sydney Swans, Hawthorn and Fremantle in the last month, but was cautious to not get too carried away.

"It was a good win and it helps our belief. We played against the top team. So we'll take a lot from that," he said.