By Nick Mulvenney SYDNEY (Reuters) -Australia coach Joe Schmidt has made a raft of changes to his backline but just one tweak up front for Saturday's Rugby Championship test against the All Blacks. The Wallabies go into the match at Stadium Australia heavy underdogs on the back of a record 67-27 mauling at the hands of Argentina in Santa Fe two weeks ago.

A proud moment awaits for Australia prop James Slipper who will get the opportunity to equal the nation’s record for most Test caps after being picked to play in the Rugby Championship clash with Argentina on Saturday.

Wallabies coach Joe Schmidt conceded the last-start thrashing by Argentina and the trip back home left some players “a little bit run down” after making mass changes for Saturday’s history-making Bledisloe Cup opener against the All Blacks in Sydney.

Australia coach Joe Schmidt has made a raft of changes to his backline but just one tweak up front for Saturday's Rugby Championship test against the All Blacks, which doubles as the first of two Bledisloe Cup tests.

James Slipper is poised to become the most capped Wallaby ever after being named on the bench Thursday for Australia's crunch Bledisloe Cup clash against the All Blacks. New Zealand have owned the Bledisloe Cup since 2003 and have lost just one of their last 12 Tests against Australia,

Prop James Slipper will become the most capped Wallaby of all time when he runs out for his 140th Test on Saturday afternoon at Accor Stadium.

Prop James Slipper will surpass George Gregan as the most-capped Wallabies player of all time when he lines up against the All Blacks in his 140th Test match.

The All Blacks have made four changes to their starting line-up ahead of the first Bledisloe Cup test in Sydney against the Wallabies from the team that suffered a 18-12 loss to the Springboks in Cape Town.