Defender Brennan Cox is expected to be fit to play in Sunday's RAC Derby at Optus Stadium after he was a late withdrawal against St Kilda due to a hip injury.

In the latest Envision Medical Imaging injury update, high performance manager Jason Weber said Cox was very close to playing against the Saints.

“Brennan trained really well last week, he just wasn’t quite there,” Weber said.

“We’ve got strong expectations that this week he’ll be available for match committee and allowed to play.”

Midfielder Nat Fyfe has pulled up well relating to his right hamstring after making his return to football against the Saints.

Weber said the Fremantle captain is managing a cork injury to his left leg but is still expected to be fit for the RAC Derby.

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“Nat went forward in the second half, that was a very tactical move from Justin Longmuir,” Weber said.

“He came back quickly from a hamstring and he’s pulled up really well today.

“He’s got a cork on his opposite leg which is limiting him a bit but he’ll be up and going in the next few days.”

Weber said Fremantle would need more time to see how Sean Darcy (concussion) and Hayden Young (ankle) will recover from the injuries they sustained against the Saints.

“Sean took a rather serious blow on the weekend, he’s obviously got some medical hoops to jump through this week,” Weber said.

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“Hayden had a nasty twist to his ankle during a tackle. At this stage, he’s seeing a specialist and we’ll progress that accordingly.”

Forward Sam Sturt will miss at least two weeks with the ankle injury sustained in training last Thursday on the Gold Coast.

Fellow forward Liam Henry has pulled up well after making his return to football, playing one half of football on Friday in a match for non-selected players against Gold Coast.

“Liam did really well,” Weber said.

“It was a great return to playing for him, he’s put a couple of kilos on, performing really well and he’ll be back (training) with the team this week.”

Weber said defender Reece Conca was one week away from a return to football.

“It was a fairly low grade hamstring injury sustained against Adelaide, but he’s got a bit of history on that side,” Weber said.

“He trained well last weekend. He’ll see out this week and be back the week after.”

Jesse Hogan remains 2-3 weeks away as Fremantle take a cautious approach with the forward’s calf injury.

“Jesse just had to hold back slightly. He was probably a little bit slower last week than we would have liked,” Weber said.

“He’s come in this morning and tested well, so we’ll get him moving from here.”

INJURY LIST
Brennan Cox (hip flexor) - Test
Reece Conca (hamstring) - 1 week
Jesse Hogan (calf) - 2-3 weeks
Sam Sturt (ankle) - 2-3 weeks
Stefan Giro (ankle) - 3-4 weeks
Sean Darcy (concussion) - TBA
Hayden Young (ankle) - TBA
Griffin Logue (toe) - TBA
Alex Pearce (ankle) - TBA
Joel Hamling (ankle) - TBA
Sam Switkowski (back) - TBA