Sydney: Wallabies Adam Ashley-Cooper and Wycliff Palu will miss this week`s Rugby Championship Test against Argentina through injury, the Australian Rugby Union said Monday.
Outside-back Ashley-Cooper has been ruled out for one week with a nerve compression injury to his neck which he exacerbated in the 24-23 win over South Africa in Perth on Saturday.
Number eight Palu suffered a head knock in the same match and will now follow concussion protocols ahead of his return to play, team officials said.
"It`s disappointing to lose two experienced members of our squad ahead of what is an extremely important game against Argentina," Wallabies coach Ewen McKenzie said.
"However, this year we`ve taken a proactive approach to making early decisions around guys carrying injuries, which is the case here.
"As is always the case with sport, the next guy in line now gets a chance to step up and take advantage of the opportunity they`ll be given."
Queensland Reds number eight Jake Schatz will come into Australian camp as an additional training squad member, joining scrum-half Will Genia, hooker Saia Faingaa and prop Benn Robinson.
The team for Saturday`s Test against Argentina on the Gold Coast will be named on Tuesday.