David Warner is set to be subbed out of the second Test against India in Delhi due to concussion and will be replaced by Matt Renshaw.
Warner was struck on the helmet by Mohammed Siraj at the end of the 10th over having previously taken a painful blow on the elbow. He continued to bat on before edging Mohammed Shami to the wicketkeeper for a laboured 15 and didn't field late in the day when Australia began bowling.
At the time he was described as not feeling "100 percent" and after further assessment during the evening he has been withdrawn from the match.
Warner's withdrawal continues a difficult start to the tour for him after twin failures in Nagpur which have thrown the spotlight on his future in Test cricket. He now averages 21.78 in Tests in India.
It means a quick return to the side for Renshaw who was left out following the defeat in Nagpur to accommodate the return of Travis Head.
"There's no slight on him," selector Tony Dodemaide said. "He's very much a valued player in our team planning moving forward. He was quite stiff, particularly in the first innings [in Nagpur]. So he hasn't been dropped for those performances."
Although Renshaw came back into the Test side in the middle order he opened throughout the first phase of his career from 2016-17.
Australia have had a number of injury problems on this tour. Cameron Green and Mitchell Starc did not recover from their broken fingers in time to make the team in Delhi while Josh Hazlewood has also missed the first two matches.