Australia have suffered yet another injury setback after Karmichael Hunt was ruled out with an ongoing groin injury.

Hunt, who was sidelined in the Reds' last two Super Rugby games due to the same injury, sat out large parts of Wallabies training in the opening two weeks and missed Monday's gym session. 

In other injury news, lock Rob Simmons is likely to be fit for the second Test in Melbourne after he left the field early in the first Test with a back niggle. Wing Rob Horne has also been cleared of a concussion, after he failed a head assessment during the first game.

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