The team skipper Ben Stokes is said to be "exhausted" but still "fit and ready" to bowl, according to assistant coach Jeetan Patel, even though he abstained from bowling on the third day of a pivotal Ashes Test.
Stokes utilized five other bowlers as the Australian side moved to 271-4 in their follow-on, establishing a commanding lead of 356 runs at the Adelaide Oval.
The versatile all-rounder had earlier battled for more than five hours at the wicket over two days to compile 83 runs in England's first innings.
During his marathon 198-ball stay, the veteran cricketer was hit on the helmet by Mitchell Starc and experienced muscle cramps. He also needed a period off the field on Friday after hitting his head on the turf while attempting a stop.
"He could be a little fatigued and just need a bit of time to himself right now," commented Patel.
"From what I understand, he's quite ready to bowl. I think he's just pretty knackered and he's taken a lot out of himself to get through this point in the match."
Given his chequered injury history – Stokes has not played a full part in any of England's last four series – any indication the Durham man might be carrying a problem attracts considerable scrutiny.
Always keen to be in the heat of battle, Stokes' decision not to bowl on Friday was curious given it was England's last chance to stay in the Ashes series.
At 2-0 down and requiring a victory in Adelaide to keep their aspirations of winning back the Ashes intact, England had conceded a first-innings deficit of 85 runs.
"All I know is he operates 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 remained in the match by bowling out Australia for approximately 240 in their second knock and had faint chances at certain scorelines, only for the hosts to accelerate away through Travis Head's not out 142.
Although England bowled 66 overs, Stokes did not use himself.
"He abstained from bowling but that's probably a different discussion with him," said former New Zealand international 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 last time Stokes curtailed his own bowling was on the final day of the drawn fourth Test against India at Old Trafford in July.
He afterwards missed the fifth Test at The Oval with a shoulder problem.
Stokes has a history of driving himself past breaking point, and it was suggested to Patel that the captain felt he might have risked injury if he pushed himself any further in Adelaide.
England are on the verge of yet another defeat in Australia, once again likely to be beaten inside the initial three matches of the series.
If the visitors' defeat is sealed on Saturday's fourth day, it would mean the destination of the Ashes has been determined in 10 days – the first and second Tests were over in short periods respectively.
Not since 1921, when Australia needed only eight playing days to win in England, has the victor of an Ashes series been decided this quickly.
If a first goal is to prolong the game into a fifth day, England will also have to achieve the highest successful chase at the Adelaide Oval to keep the series ongoing.
"I remain convinced there's an chance for us," said Patel. "It will be difficult, we're going to need something extraordinary. I think it's high time we witnessed something magical from us."
"After three matches, we've landed some blows but absorbed many. It's about time, now we're backed into a corner, to fight back fiercely."
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