Lock Arnold back for injury-hit Wallabies' Argentina tour

Towering lock Rory Arnold and uncapped back Jock Campbell were notable call-ups on Thursday to an injury-hit Australia squad for two Rugby Championship Tests against Argentina, who are coached by former Wallabies boss Michael Cheika.

Dave Rennie's men head to Mendoza for the first of two clashes on 6 August, following their 2-1 home series defeat to England which was sealed by a demoralising 21-17 loss in Sydney last Saturday.

Australia, under mounting pressure after five defeats in their last six Tests, will be desperate for confidence-building wins in Rugby Championship clashes against Argentina, South Africa and New Zealand.

"We were massively disappointed on the weekend but we're only three matches into a 14-Test season so we need to take the lessons on board quickly and learn from them," said head coach Rennie as he named a 36-man squad.

The brutal England series, which left forwards Izack Rodda, Cadeyrn Neville and Ned Hanigan all injured, means Arnold returns.

Rennie is allowed three overseas picks and the door opened to Toulouse star Arnold with Samu Kerevi heading to Birmingham to play for Australia in sevens at the Commonwealth Games.

Japan-based Quade Cooper and Marika Koroibete are the other foreign-based players in the squad.

'Massive positive'

Arnold's return is timely, with firepower needed against a powerful Pumas pack that helped them score a thrilling series win against Scotland last weekend.

Campbell is one of four uncapped players in a squad without injured backs Tom Banks and Andrew Kellaway, while Melbourne Rebels prop Matt Gibbon was handed a chance.

Gibbon's teammate Pone Fa'amausili and Waratahs forward Jed Holloway are also in contention for their first Tests on the tour.

Australia A representatives