Australia's resounding victory, on the back of a goalless draw in the first leg of the sides' CONCACAF/AFC Play-off second leg, takes the team to a fourth successive World Cup.
Australia captain Mile Jedinak said his side had "stuck to our guns" after scoring a hat trick in the 3-1 playoff win over Honduras in Sydney that secured a place at the World Cup. "When you're coaching your national team, there's an extra layer and burden of responsibility there - knowing what it means to the nation and to these players".
"I'm delighted for everyone - the players, the staff and the organisation".
"We've got some fresh legs, we'll go hard, we'll put the pedal down and go as hard as we can", he said. I knew it was only a matter of time. "We got the result we deserved".
"Now I've got to make some big decisions", he told Fox Sports at full-time when asked about his global future.
Seriously impressive stuff from the 38-year-old.
"This last four years is the hardest thing I have ever done". "They believed in something that we started, and right to the end they displayed the kind of resilience and belief that has made me proud all the way along".
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And, despite fervent speculation, much of it fed by Postecoglou's own comments, he refused to confirm whether or not he would stay on to lead the Socceroos in Russian Federation next June.
After widespread disappointment at not qualifying directly from the group stages, Cahill said that the Socceroos were determined to prove themselves to the Australian public.
Australian striker Tomi Juric missed two clear-cut chances to score - one in each half - and the Socceroos were left confused after Italian referee Daniele Orsato initially awarded them a penalty only to change his mind after consulting with an assistant.
The match was played in front of 76,080 fans at Stadium Australia, but the atmosphere was tense as the Socceroos initially struggled to break down their deep-lying opponents and Tommy Rogic screwed a shot wide from their best opening.
"This group really deserves it".
Rogic burst onto the scene with the Central Coast Mariners back in the 2011-12 season before earning a move to Celtic in 2013, but injury has prevented the young midfielder from reaching his full potential. "I am indebted to this country for allowing me to follow my dreams and do what I love".