Andrew McDonald insists Nic Maddinson's Test squad call-up should be no shock, with the left-hander edging closer to replacing the injured Cameron Green in Durban.
Green has been officially ruled out of Australia's side for the opening Test against South Africa, after failing to overcome the abdominal strain suffered in last week's final ODI.
Australia are confident the allrounder will return in the three-Test series, but do not expect to have him bowling given he was also managing a shoulder issue.
