Cheika praises make up of Australia squad

Michael Cheika has acclaimed the politically-diverse blend of "jokers, lovers and fighters" who have swept Australia to a fourth World Cup final.

The Wallabies will face New Zealand at Twickenham on Saturday with the winners recognised as the most successful nation in the competition's history having each triumphed on two previous occasions.

Michael Cheika has led his side to the final.

Credit: PA

Match report and highlights: Argentina 15-29 Australia

Australia survived a rousing second-half fightback from Argentina to register a 29-15 victory at Twickenham that sets up a World Cup final against old foes New Zealand next Saturday.

Adam Ashley-Cooper's hat-trick and a touch down by Rob Simmons helped the Wallabies reach the sport's global showpiece for the first time since 2003, but their fans were subjected to some nerve-shredding moments.

Adam Ashley-Cooper was the hero.

Credit: PA

Australia to delay naming team to face Argentina

Michael Cheika is waiting.

Credit: PA

Australia will delay naming their team for Sunday's World Cup semi-final against Argentina until this afternoon.

The Wallabies have injury concerns over number eight David Pocock (calf), full-back Israel Folau (full-back) and prop Scott Sio (elbow) and will give the trio one last training session to prove their fitness for Sunday's Twickenham showdown.

"After training we'll decide. It's a World Cup semi-final so it's not like we're keeping anyone for next week," head coach Michael Cheika said.