NSW skipper Boyd Cordner appears increasingly unlikely to play in State of Origin III after he again failed to train with his team on Friday.

The back-rower has yet to train with the side since entering camp, having previously targeted sessions on Thursday then Friday as the opportunity to show he has overcome his calf musle injury.

Cordner again insisted he would be fit for next Wednesday’s game three at Suncorp Stadium.

But Sunday’s training run now shapes as D-Day for the skipper, who looked hampered as he did fitness drills under the watchful eye of Blues trainer Travis Touma.

“It’s fine mate, everything’s going to plan, I’m happy with it,” insisted Cordner, who said he wanted to train on Friday but was held back by the Blues’ training staff.

“I’ve been feeling fine all week, I’ve been itching to get out there and train with the boys.

“I have to listen to the medical staff, they’ve got a plan in place for me and everything’s going well for me, I’m ticking every box, I’m feeling sweet.

“I wanted to do more today but I just had to trust the medical staff.”

Interchange selection Tariq Sims again trained in Cordner’s back-row spot and is set to play there if the captain is ruled out, with 18th man Ryan James coming onto the bench.

The Blues have one more training session in Sydney on Sunday before flying to Brisbane where they will have their captain’s run on Tuesday.

Blues five-eighth James Maloney also failed to finish the session and appeared to grab at his hamstring however he told AAP he was not in doubt.

“It was just an early rest,” Maloney said.

“I’m getting old. We were nearly done so it’s all good.”