James O'Connor volition marque his agelong awaited Wallabies instrumentality against Argentina connected Saturday but Sean McMahon volition beryllium straining connected the leash for different week.
Veteran O'Connor hasn't played for Australia this twelvemonth aft picking up a groin wounded successful Super Rugby trans-Tasman.
In his lack Quade Cooper has re-emerged arsenic the main Wallabies playmaker and manager Dave Rennie has opted to reintroduce O'Connor from the seat against Los Pumas for the circular 5 Rugby Championship clash successful Townsville.
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McMahon, who hasn't played for the Wallabies since 2017, does not adjacent marque the reserves contempt impressing astatine grooming aft emerging from edifice quarantine.
Instead Rebels bruiser Rob Leota volition marque his archetypal Test commencement astatine blindside flanker successful spot of Lachie Swinton.
Swinton was yellowish carded successful Australia's 30-17 triumph implicit South Africa past weekend.
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"It's a truly arrogant infinitesimal for Rob and his household to gain his archetypal commencement successful Wallaby golden and we're each rapt for him," Rennie said.
"He's truly impressed america with his enactment ethic connected and disconnected the tract and worked hard for this opportunity.
"It's been fantastic to link with the Townsville assemblage this week up of the archetypal ever Test present and we're determined to physique connected the past mates of performances connected Saturday night."
WALLABIES (15-1): Reece Hodge, Andrew Kellaway, Len Ikitau, Samu Kerevi, Marika Koroibete, Quade Cooper, Nic White, Rob Valetini, Michael Hooper (c), Rob Leota, Matt Philip, Azack Rodda, Taniela Tupou, Folau Fainga'a, James Slipper
Reserves: Feleti Kaitu'u, Angus Bell, Tom Robertson, Darcy Swain, Pete Samu, Tate McDermott, James O'Connor, Jordan Petaia