Wallabies second-rower Miles Amatosero has been suspended for Saturday's clash with Japan in Townsville.
Amatosero was handed a three-week ban after he was red-carded during the three-point win over the Japanese in Osaka.
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The Waratah can get his ban reduced to two weeks if he takes part in World Rugby's Coaching Intervention Programme. This would clear the 24-year-old to play against Argentina on August 29, serving the second match for Shute Shield side Gordon next weekend.
Amatosero was sent from the field in the 32nd minute following a dangerous cleanout on Japan skipper Warner Dearns.
The incident was upgraded from a yellow card shortly afterwards, leaving the Aussies down to 14 for 20 minutes.
"The Foul Play Review Committee (FPRC) has found Australian lock Miles Amatosero guilty of dangerous play for a contrary charge into a ruck or maul, in breach of Law 9.20(a)," a statement from SANZAAR read.
"Amatosero was shown a red card for the dangerous play in the 33rd minute of the international match between Japan and Australia at Hanazono Rugby Stadium, Osaka.
"The FPRC determined that the act of foul play merited a mid-range entry point of six weeks/matches.
"In light of Amatosero’s admission that he committed an act of foul play, along with mitigating factors such as his disciplinary history, experience, and remorse, the FPRC imposed a reduction of three weeks on the sanction."
The Wallabies have a number of options to replace Amatosero, with Tom Hooper joining the squad in Brisbane ahead of this week's match.
Jeremy Williams came off the bench last week, with Lukhan Salakaia-Loto and Lachlan Shaw among the other specialist second-rowers in the squad.
Salakaia-Loto missed selection for the Nations Championship, but played four Test for the Wallabies in 2025.
Meanwhile, Shaw debuted off the bench against Ireland at the start of the Test season off the back of an excellent season with the Brumbies.