The team skipper Ben Stokes is reportedly "worn out" but still "physically able" to deliver overs, per assistant coach Jeetan Patel, despite he did not bowl on the day three of a critical Ashes Test.
Stokes utilized five other bowlers as Australia progressed to 271-4 in their second innings, establishing a substantial advantage of 356 runs at the venue.
The versatile all-rounder had previously spent over five hours at the crease across two days to score 83 runs in England's first innings.
During his marathon 198-ball stay, the 34-year-old was struck on the head by a fast bowler and experienced muscle cramps. He also required time off the field on the previous day after hitting his head on the turf while trying to field the ball.
"He could be a bit tired and just require some time to himself right now," stated Patel.
"From what I understand, he's pretty fit to bowl. I think he's just pretty knackered and he's taken a lot out of himself to reach 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 indication the star all-rounder might be carrying a problem attracts significant attention.
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 remain alive in the Ashes series.
At 2-0 down and needing to win in Adelaide to keep their hopes of regaining the urn alive, England had given up a first-innings deficit of 85 runs.
"My understanding 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 tourists could have remained in the match by dismissing Australia for approximately 240 in their second innings and had faint chances at certain scorelines, only for the home team to accelerate away through Travis Head's not out 142.
Even though England delivered 66 overs, Stokes chose not to bowl.
"He didn't bowl but that's probably a different discussion with him," said former New Zealand international Patel.
"I don't actually know. We all know he doesn't do anything 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 was absent for the fifth Test at The Oval with a shoulder injury.
Stokes has a reputation of pushing his body to its absolute limit, and it was put to Patel that the captain felt he might have risked injury if he exerted himself any further in Adelaide.
England are on the verge of yet another defeat in Australia, once again likely to be beaten inside the first three Tests of the series.
If the tourists' loss is completed on Saturday's fourth day, it would mean the destination of the Ashes has been decided in 10 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 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 alive.
"I still believe there's an opportunity for us," said Patel. "It will be difficult, we're going to need something magical. I think it's about time we saw 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 throw some haymakers."