Troisi had 25 minutes off the bench in the 1-1 draw with Cameroon, after replacing Robbie Kruse in St Petersburg. He also came off the pine for 29 minutes, with Tom Rogic giving away, in the 3-2 loss to Germany in Sochi.

With a short turnaround Ange Postecoglou may turn to the ex-Melbourne Victory man to start and help spark an unlikely victory over the South American champions.

Troisi admitted his impact role was "difficult", but has been doing his best to impress in training and in the limited minutes he has been given in Russia so far.


"You try and do the best with the minutes you have," he said.

"Every time I've come on I've tried to do something to help the team out. It's been difficult but we've been working hard and there's definitetly a lot of positives to come out of both our games.

"(But) at the end of the day that's up to the boss. Everyone has to be ready. Tomorrow is a new day. The boys that haven't played as many minutes as the others are training hard and working hard, and I'm sure whoever gets that opportunity will try and take it as best as they can."

Cameroon's goalkeeper Joseph Ondoa kicks the ball past Australia's forward James Troisi


Troisi admitted the Socceroos will need to lift to overcome the Chileans in Moscow. A positive start, as well improving the speed and quickness of their play, will be essential to thwart La Roja on Sunday.

"We want to start every game well and we have to finish every game well," he said.

"In the Cameroon game we started well, we just lasped and you get punished at this level. Chile is definitely going to be a difficult game - high intensity, fast - that's how the Chileans like to play as well. It's going to be difficult but we'll give it our best shot.

"Chile have to win as well. We're definitely going to have to move the ball quick, play quick. It's another challenge we're looking forward to."

Australia's now formation has come under criticism but Troisi is adamant there has been improvement.

"There's definitely been progress," the 28-year old said.

"In the World Cup qualifiers we play against Asian teams, it's different against your Germanys and your Cameroons. We've definitely shown improvement and we want to change the mentality of Australian football and try play in a certain way. "