David Pocock will miss the remainder of Australia's Rugby Championship campaign due to a broken hand.
The back-rower suffered the injury during the first half of the Wallabies' 36-20 victory over Argentina on Saturday in Perth and will now be unavailable for their final two games against South Africa and the Pumas.
Pocock confirmed the news on his Twitter page, revealing he will have an operation on the affected area once the swelling relents.
"Really disappointed to be ruled out of #Rugby Championship," he tweeted. "Surgery on my hand once the swelling goes down. Thanks for all the support."
The 28-year-old has been plagued by injury in recent years, undergoing knee reconstruction surgery in both 2013 and 2014, as well as fracturing his eye socket against England three months ago.
Pocock could now target a return to the final Bledisloe Cup meeting against New Zealand on October 22, while he will also be eyeing a spot on Australia's end of tear tour to Europe.