Goals in each half from Nestory Irankunda and Connor Metcalfe saw Australia shock Turkey 2-0 in their opening World Cup Group D clash in Vancouver.
Tony Popovic's side were considered big underdogs ahead of the game at BC Place, but they produced a disciplined display to record just their fifth World Cup victory and their second win in their opening fixture at the tournament, with young goalkeeper Patrick Beach the hero.
The 22-year-old was handed a surprise competitive Socceroos debut in place of the more experienced Mat Ryan, but did not let his side down with a string of impressive stops - eight, the most so far by any 'keeper in the tournament - to frustrate Turkey, the best coming when he tipped Abdulkerim Bardakci's long-range strike on to the post to preserve his team's slender lead.
Earlier, Watford striker Irankunda became Australia's youngest World Cup scorer when he showed great skill and composure to finish the opening goal in the 27th-minute on the counter, before Metcalfe's low drive from distance sealed the victory with a quarter of an hour to go.