​Socceroos adamant Peru's first goal was offside

Tim Cahill Socceroos Peru
A tight call that ultimately sunk the Socceroos

While Australia are left to rue a lack of luck in front of goal, the green and gold are adamant Peru were fortunate to have their first goal allowed to stand.

Replays appear to show Paolo Guerrero marginally offside in build up to Andre Carrillo's 18th-minute strike, but the referees missed it and VAR didn't deem it worthy of review. 

While debatable as to whether he was indeed offside, an aggrieved Socceroos seem certain the wrong call was made. 

"In my opinion we are unlucky because the first goal was offside and the second goal was very lucky," Australia's coach Bert van Marwijk said post match. 

It was an observation echoed by defender Trent Sainsbury, who struggled to contain his frustrations. 

"Not feeling happy, it's not the nicest way to go out of the tournament," Sainsbury said.

"I thought the first goal was offside, I don't know what the ruling should be on that.

"If I said what I wanted to say I'd probably cop a huge fine so I'll just leave it at that."

While the South Americans benefited from that slice of luck, the Socceroos had none of their own in the final third.

Despite dominating play, Australia struggled to fashion out chances and lacked a cutting edge when they did. 

Even the introduction of Tim Cahill couldn't help matters with van Marwijk identifying it as a real issue for a side he now leaves in the hands of Graham Arnold.

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"We became better and better, but at the World Cup you can see for this team it is difficult to make goals at this level, because against France we were at least equal and against Denmark even better," he said.

"But in all three games we couldn't make the difference in goals and that is something this squad misses at this level. 

"When you see the statistics today, we had maybe 60 percent possession and we had a lot more chances and shots at goal, I feel they shot three times and made two goals."