Wallabies coach Michael Cheika says his side will get through the final against the All Blacks on adrenaline after beating Argentina 29-15 in their semifinal.
Cheika's men have had to beat Fiji, Wales and England, plus sneak past Scotland in their quarter-final to make next Sunday's showdown at Twickenham, whereas the All Blacks had a tough test against Argentina and breezed past Tonga, Namibia, and Georgia before blowing France away in their quarter-final.
The All Blacks' toughest test was yesterday's 20-18 semifinal victory over South Africa but the feeling is they have more in the tank that the Wallabies, who almost lost to the Scots before getting out of jail with a 35-34 victory last weekend.
Today they controlled the match in the first half thanks to Adam Ashley-Cooper's two tries and one to Rob Simmons, but at 22-15 up in the second half they lost some composure as the Pumas poured on the pressure. Unfortunately for the South Americans, they couldn't capitalise on their chances against a tight defensive unit.
Asked how much the Aussies had left in the tank, Cheika said: "Probably about 80 minutes, I reckon. We might need a little more, I don't know. Obviously New Zealand have had a very different path to get here.