Serbia boss Radomir Antic admits he will treat Australia with caution when the two nations meet in Nelspruit on Wednesday.

Following Australia's fighting 1-1 draw against Ghana with ten men, Antic said that his Serbian side would need to be wary but also insisted he would ensure the players concentrated on their own game especially after they managed to defeat group favourites Germany.

"As the game went on, Australia had to change," said Antic.

"They started aggressively and went ahead, but after the sending off of Harry Kewell had to change their approach.

"Despite this, they still went close to victory, and they have shown many times they are a competitive team.

"We must focus on our own game as we prepare for the match."

Antic added that he has a number of players (6) on a yellow card and was unsure of how he would tackle that issue as he knows he needs to win to progress to the Round of 16.

"That is a lot of players with one booking and we still haven't decided what to do, it could be a last-minute decision," added Antic.

"On the one hand, we have to go for a win and cross the next bridge when we come to it but, on the other, we also have to look ahead because we can't afford to lose too many starters if we reach the second stage.

"Australia are a fiercely competitive team so it's good to have central defender Aleksandar Lukovic back from suspension and he is likely to be picked again."