Australian Rugby League hooker Cam Smith says the team is expecting Vodafone Fiji Bati to try to "blow them off the park" in the early stages of their Rugby League World Cup semifinal at Sydney Football Stadium on Sunday.

The Australians will be at unbackable odds against the surprise team of the last four, but the players refuse to talk about the final against the winner of Saturday's game between New Zealand and England before the semifinals are decided.

Smith said they are not taking things for granted.

He said there will be the chance of a massive upset against Fiji Bati if we turn up not ready to play.

The Fiji Bati/Australia semifinal will be played on Sunday at 9pm.