South Africa all-rounder Jacques Kallis can only bat for the remainder of the second Test against Australia at Adelaide Oval, while he remains in doubt for the third Test after injuring his hamstring during the first day's play on Thursday.
After claiming the early wickets of Ed Cowan (10) and Ricky Ponting (four) and posting figures of 2-19, Kallis pulled up sharply while steaming in to bowl his fourth over.
The veteran could not complete the over and was forced from the ground for treatment.
The 37-year-old did not reappear as Australia powered to a colossal total of 5-482 courtesy of Michael Clarke's unbeaten 224 and timely tons to Dave Warner (119) and Mike Hussey (103).
An MRI scan on Kallis revealed that the world's top-ranked all-rounder has strained his right hamstring.
Proteas team manager Dr Mohammed Moosajee confirmed Kallis could not bowl, and was a potential dobut for the final Test in Perth next week.
"Jacques has suffered a grade one strain to his right hamstring," Dr Moosajee said.
"He will not be able to bowl in the current Test match but can bat.
"We can only make a call on his availability for the next Test match closer to the time as it is subject to how he responds to treatment."
South Africa coach Gary Kirsten hoped Kallis' preventive measure to remove himself early from the match would be beneficial in a quick recovery, particularly if he is called on to bat.
"It's a type of injury he's never had in his career," Kirsten said.
"I think he made a wise decision as soon as he felt a twinge to get off the park quickly, which obviously from a batting perspective is going to be important.
"These days we don't have (batting) runners so it's going to be important for us that he can bat."
Kallis' injury added to a disastrous start for the Proteas in Adelaide who lost paceman Vernon Philander on the morning of the clash to a back complaint.
Philander was unable to move his lower back once he awoke on Thursday.
"Vernon got out of bed this morning, and as he got out he couldn't bend," Kirsten said.
"It's happened to me once before where you pick up a lock and spasm in the back, but normally it doesn't last long, it can actually go away.
"We were hoping in the time (between) he picked up the spasm and getting here (to the ground) that it would go away but it didn't, so we had to make the call that he couldn't play."
Dr Moosajee said Philander was undergoing rehabilitation while in Adelaide and was hopeful the fast bowler would return fit in time for the third Test.
"Vernon's scan reveals nothing more than a lower lumbar muscle strain as initially suspected," Dr Moosajee said.
"He will receive treatment and undergo rehabilitation during the course of the current Test match and we are hopeful he will be fit for the final Test in Perth."
Dale Steyn also left the match with a hamstring niggle but returned later in the day to bowl and claim the scalp of centurion Hussey.Kirsten said the speedster recovered once he underwent treatment and is not at risk when play resumes on Friday.