Skipper Pat Cummins has admitted that his involvement in the first Ashes Test appears doubtful due to persistent fitness concerns.
Recent reports from Australia had indicated that Cummins might be ruled out of the entire series, though the pace bowler himself has now given a more comprehensive update on his condition.
The 32-year-old has been battling with a spinal issue that has kept him sidelined since his last professional game in July.
While Cummins has restarted running exercises, he has yet to commence bowling as part of his recovery program.
"I wouldn't put a percentage on it, but my assessment is probably less likely than likely," stated Cummins. "We get into begins next week, so approximately a couple of weeks away from actually putting on the spikes and delivering on turf."
Australia coach Andrew McDonald had previously indicated that Cummins would require a bare minimum of four weeks of net sessions to have any chance of playing in the first Test, set to begin on November 21.
Cummins supported this assessment, explaining: "You'd want at least approximately a month in the nets. If you play a Test match, you want to make certain you're capable to bowl 20 overs in a day without concern."
Given the compressed timeframe, there are also doubts about Cummins' availability for the following match in Brisbane on December 4.
Should Cummins be unavailable, former captain Steve Smith is expected to captain the side, with Scott Boland possibly filling the gap in the pace department.
The hosts have held the Ashes urn since 2018, while The visitors are without a Test win in Australia since 2011.
Cummins' current fitness issues echo challenges from earlier in his distinguished career. He made his Test first appearance as an 18-year-old in 2011 against South Africa, becoming the youngest-ever player to take a five-wicket haul in an innings at that time.
However, his impressive debut proved to be a misleading start, as Cummins endured six years before his next match due to multiple stress fractures in his lower back.
When healthy, Cummins has established himself as one of cricket's elite fast bowlers. The 32-year-old has taken 309 Test dismissals at an remarkable average of 22.10.
His record in home conditions is even more formidable, with 177 wickets at 19.92, while he has claimed 91 wickets against England in just 19 matches.
In the latest Ashes series in 2023, Cummins played in all five Tests, taking 18 wickets and establishing his value to the Australian side.
As captain, Cummins enjoyed a successful 2023, taking six wickets in Australia's triumphant World Test Championship final and starring in their 50-over World Cup final win against India.
He remains the only captain in Test history to win the World Test Championship, World Cup, and an Ashes series.
England also face their own fitness worries with captain Ben Stokes, who has been troubled by a shoulder injury since the Test series against India.
Both teams will be assessing their key players closely as the highly anticipated Ashes series nears.