Australia wicket-keeper Adam Gilchrist was released from hospital on Tuesday is expected to be fit for Thursday's first Ashes Test against England.
The 30-year-old had been on an intravenous antibiotic drip to treat an infected elbow injury.
Speaking on Monday, Gilchrist said: "It's frustrating not being able to train but I'm working on the basis this is a frustration and nothing more.
"I'm keen to get back on deck as soon as possible and my expectation at this stage is that I will be fully fit and ready to play in the Test match come Thursday morning."
Gilchrist is one of Australia's key players - as well as being wicket-keeper and vice-captain, he is also one of the world's best batsman.
He is seventh in the latest Test batting rankings and averages 58.51 after 34 Tests, with six centuries.
Michael Vaughan hit a timely century on his return from injury as England drew their final warm-up match before the Ashes.
Vaughan, who was returning from knee surgery, reached his ton midway through the afternoon session of the final day against Queensland.
He went on to make 127 before being trapped lbw by spinner Nathan Hauritz.
Vaughan, who resumed on an overnight score of 49, had some fortune along the way - he was dropped four times.
Nightwatchman Matthew Hoggard was the only casualty of the morning session, out for one in the first over of the day.
Vaughan was then given good support by Mark Butcher as England sought valuable batting practice ahead of Thursday's first Test.
Australia have a dilemma over how to re-order their batting line-up following Mark Waugh's retirement from Test cricket.
With Darren Lehmann drafted into the squad, the debate centres on who should fill Waugh's number four position.
If skipper Steve Waugh retains his normal slot at five, it would then come down to a straight choice between Lehmann or promoting Damien Martyn two places from number six.
Martyn is happy to fill whatever role is asked of him, but is keen to make the step up after scoring 1,680 runs in 28 Tests at an average of 48.
Just days from the opening Test in the Ashes campaign, England cricket captain Nasser Hussain said Tuesday his team has not yet shown its best form on its tour of Australia.
Hussain acknowledged Australia deserved its position as favorite to win the five-Test series that begins Thursday at Brisbane's Gabba ground.
England has not won an Ashes series in 16 years and has been unconvincing since arriving in Australia last month. Australia is bidding for an eighth consecutive Ashes series win, going into this series on the back of a convincing 4-1 series win in England last year.
But Hussain insisted his young team is capable of beating Australia.
"Australia hasn't seen the best of the England cricket team for a long while," Hussain said.
Australian paceman Jason Gillespie proved his fitness here on Tuesday for the opening Ashes cricket Test against England.
Chairman of selectors Trevor Hohns watched Gillespie complete two bowling workouts in the nets and said he could take his place in the Test starting eleven at the Gabba on Thurday if selected.
Gillespie said he felt well after bowling two 40-minute spells to prove he had overcome the calf muscle injury which kept him out of the last two Tests in Australia's 3-0 series win over Pakistan in Sharjah.
Gillespie said he had no doubt he would be ready for a five-day Test.
That would leave Brett Lee and Andrew Bichel fighting for the third fast bowling place in the team behind new-ball spearhead Glenn McGrath and Gillespie.