Australia captain Michael Clarke will miss Friday's tri-series one-day international against Sri Lanka with a hamstring injury, Cricket Australia said on Monday.
Clarke strained his right hamstring while fielding during Australia's four-wicket ODI loss to India in Adelaide on Sunday.
The Australia skipper said scans on Monday revealed that the injury was not too serious.
"I have a grade one hamstring strain so will be out of Friday's game," Clarke posted on Twitter.
Australia will name a replacement captain on Tuesday for the Sydney ODI against Sri Lanka, with wicketkeeper and vice-captain Brad Haddin and ex-skipper Ricky Ponting in the frame.
Regular vice-captain Shane Watson only returned to club cricket last weekend after a six-week absence with a calf injury.
While Clarke said he hoped to return for Sunday's one-dayer against India in Brisbane, team physiotherapist Alex Kountouris was non-committal.
"(He) sustained a low grade right hamstring strain," Kountouris said in a statement.
"I will assess him later this week and decide on his availability for the game in Brisbane on Sunday."
Selectors face several decisions in choosing their next one-day squad, with Clarke's injury and wicketkeeper Brad Haddin's future key discussion points.
Haddin missed Australia's initial three matches of the tri-series, with selectors saying he was rested as Matthew Wade took his spot.
Australia's batting line-up also faces scrutiny with newcomer Peter Forrest making 66 on debut in Sunday's defeat by India to bolster his chances of remaining in the squad.
"I know the selectors are meeting today so I'll be sitting by my phone tomorrow (Tuesday) hoping to get a call," Forrest told reporters in Brisbane on Monday.
"Yesterday was a great day and one I'm not going to forget.
"It was nice to contribute but it would have been a lot nicer had I got 80 plus or a hundred and got the side to a win."
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