England's captain Ben Stokes is said to be "exhausted" but still "fit and ready" to bowl, per assistant coach Jeetan Patel, even though he abstained from bowling on the day three of a pivotal Ashes Test.
Stokes utilized five other bowlers as the Australian side moved to 271-4 in their follow-on, building a commanding lead of 356 runs at the venue.
The dynamic player had earlier battled for more than five hours at the wicket across two days to score 83 runs in England's first innings.
During his extended 198-ball stay, the 34-year-old was struck on the head by Mitchell Starc and experienced muscle cramps. He also needed a period off the field on Friday after banging his head on the ground while trying to field the ball.
"He could be a bit tired and just need a bit of time to himself right now," stated Patel.
"Based on my knowledge, he's pretty fit to bowl. I think he's just really exhausted and he's expended a great deal out of himself to get through this point in the match."
Considering his complicated injury past – Stokes has not played a full part in any of England's last four series – any suggestion the Durham man might be nursing an issue draws significant attention.
Eager to be in the heat of battle, Stokes' absence from the attack on Friday was puzzling given it was England's final opportunity to stay in the Ashes series.
At trailing 2-0 and requiring a victory in Adelaide to keep their hopes of winning back the Ashes intact, England had given up a first-innings lead of 85 runs.
"My understanding is he goes at 100%," said Patel. "If he thinks he can't do it at 100%, I don't think he's going to do it. That's probably where he's at."
The visiting side could have stayed within the contest by dismissing Australia for approximately 240 in their second innings and had faint chances at certain scorelines, only for the hosts to accelerate away through Travis Head's unbeaten 142.
Although England bowled 66 overs, Stokes chose not to bowl.
"He didn't bowl but that's perhaps a different discussion with him," noted ex-New Zealand player Patel.
"I don't actually know. We all know he never performs at 80%. Maybe he thought he was a liability, so he didn't bowl."
The most recent occasion Stokes curtailed his own bowling was on the final day of the tied fourth Test against India at Old Trafford in July.
He afterwards missed the fifth Test at The Oval with a shoulder injury.
Stokes has a history of driving himself past breaking point, and it was put to Patel that the captain felt he might have endangered himself if he pushed himself any further in Adelaide.
England are on the verge of yet another defeat in Australia, once again probably facing defeat inside the initial three matches of the series.
If the visitors' defeat is completed on Saturday's fourth day, it would mean the destination of the Ashes has been determined in just ten days – the opening two matches were over in short periods respectively.
Not since 1921, when Australia needed only eight playing days to win in England, has the winner of an Ashes series been determined so swiftly.
If a primary objective is to prolong the game into a final day, England will also have to pull off the highest successful chase at the Adelaide Oval to keep the series ongoing.
"I remain convinced there's an opportunity for us," stated Patel. "It won't be easy, we're going to need something extraordinary. I think it's about time we witnessed something magical from us."
"After three matches, we've thrown some but taken a lot. It's time, now we're backed into a corner, to fight back fiercely."