Fringe Test spinner Ashton Agar could be sidelined when the Ashes begins after sustaining a fractured finger during Australia's one-day international defeat to India on Sunday.
The 23-year-old, one of the understudies to first-choice spinner Nathan Lyon, suffered the injury while fielding during the five-wicket loss in Indore that saw India take an unassailable 3-0 lead in the five-match series.
Agar, who returned to Australia's Test side after a four-year absence in Bangladesh in August, will miss the remaining ODIs and three Twenty20 Internationals.
With surgery a possibility, the left-arm finger spinner's hopes of taking part in a second Ashes campaign have taken a hit.
"Ashton injured his right little finger whilst fielding in the match," said team doctor Richard Saw.
"Following the conclusion of the match he went for X-rays which have confirmed a fracture of the finger.
"He will return home to Australia and consult a specialist with a possibility of surgery."
Australia will not replace Agar in the squad for the remaining two ODIs.