Australia captain Michael Clarke is still unsure whether he will face Sri Lanka at The Oval tomorrow but remains confident over his fitness for the Ashes.
The batsman is yet to play in the Champions Trophy as he struggles with a lower-back injury, prompting people to question his condition for the first Investec Test against England at Trent Bridge on July 10.
But ahead of the clash with Sri Lanka, which Australia must win to have any chance of progressing to the semi-finals, Clarke revealed he is still taking things day-to-day.
"I don't know at this stage," he said when asked about his injury. "I'll have to train today with the boys and see how I pull up tomorrow.
"But I'm hopeful, there's no doubt about that. But yeah, I really need to wait and see how I pull up tomorrow morning after training again today."
Clarke has suffered from regular back problems during his career and most recently suffered a relapse during the 4-0 series defeat in India.
He was also absent from Australia's Champions Trophy warm-up games and has been receiving specialist treatment in London.
The 32-year-old is not worried about his prospects of missing games against England, however, and added: "I'm confident, but I've been confident that I'd play every game in this series, as well. So, you're probably asking the wrong guy.
"Look, it's just daily maintenance, daily physio, and I guess I'm at a stage now where I'm slowly getting back into my cricket training.
"I've been at training the last two days. My back is certainly improving, which is a positive. I just need to push it again today and see how far I can get, and if I pull up all right tomorrow, then hopefully the Australian cricketers will allow me to take the field tomorrow."
Sri Lanka’s seven-wicket win over England on Thursday has put them well in the hunt to reach the last four.
However, a loss to Australia would scupper those hopes and skipper Angelo Mathews wants his team to treat all their remaining games as vital.
“The mood in the camp is very good," he said. "We're feeling very confident, but I think tomorrow it's a fresh game.
"We must start from zero once again. So we need to be up for the game against Australia because we all know that Aussies play well.
"They've not been in the best of form, but still, we can't be complacent against them because they've got some really good players, so we have to be on our guard all the time.
"We need to face Australia, and they are a very forceful unit when it comes to international cricket. They can demolish any team, so we need to stay focused.
"We can't think about the last week because every single game is a semi-final from now on for us, so to be alive in this tournament we need to win each and every game."