South African Vernon Philander's wretched tour of Australia has continued with a back injury forcing the battling paceman out of the second Test in Adelaide.
A day after captain Graeme Smith backed him to bounce back from a lacklustre tour, Philander woke up injured at his Adelaide hotel.
"Vernon must have slept very badly last night and woke up with a bad back," Smith said after Australia won the toss and batted.
Philander was replaced in the Proteas side by fellow quick Rory Kleinveldt who earned a last-minute recall to the starting XI after struggling in the first Test.
In Australia, the heavily-hyped Philander has been unable to continue a stunning start to his career which has returned 63 wickets in his initial 10 Test matches.
The 27-year-old failed to claim a victim in the drawn series-opener in Brisbane, recording unflattering figures of 0-103.
And in South Africa's opening match of the tour against Australia A, Philander also went wicketless.
Philander would be sent for scans on his injured back, South African team manager Mohammed Moosajee said.
"Vernon woke up complaining about lower back stiffness. He progressively got worse and didn't respond to the treatment from our physiotherapist," he said.
"He will go for an MRI scan as soon as possible to give us a clearer indication of the symptom."