Rising Australia pace star James Pattinson will miss the rest of the Test series against India with a foot injury, team officials said on Friday.
Pattinson, 21, who has taken 21 wickets in his first four Tests and has been man-of-the-match twice, has a stress injury in his left foot and needs a spell out of the game, officials said.
It continues Australia's wretched run of injuries to their leading pace bowlers with Mitchell Johnson, Pat Cummins and until recently Ryan Harris out of action.
Selectors have added Mitchell Starc to a 12-man squad for next week's third Test in Perth, with Harris now in line for a return to action.
"James Pattinson reported some left foot pain after the second innings of the Sydney Test match," team physiotherapist Alex Kountouris said in a statement.
"Whilst he was able to bowl unrestricted in the game he did have pain towards the end of the match.
"As such, he had X-rays and scans after the game that have cleared him of a stress fracture but have demonstrated early stage bone stress injury of the metatarsal bone of the left foot."
Kountouris said Pattinson will be watched carefully over the next few weeks and will not be available for selection for the remainder of the Test series against India.
Chief selector John Inverarity said it was his panel's intention to rest Pattinson from the Perth test, getting under way next Friday.
"The intention of the National Selection Panel was to rest James from the Perth Test match as this young man has played in four Test matches over a period of just five weeks," he said.
"This intention has become a necessity after post-match scans have revealed James's foot injury."
Australia squad for Perth Test - Michael Clarke (capt), Brad Haddin, Ed Cowan, Ryan Harris, Ben Hilfenhaus, Mike Hussey, Nathan Lyon, Shaun Marsh, Ricky Ponting, Peter Siddle, Mitchell Starc, David Warner.