Australia weathered a Welsh storm to win World Cup Pool A with a 15-6 victory at Twickenham.
Wales paid a high price for failing to make their extra numbers count when the Wallabies were reduced to 13 men for seven minutes in the second half.
Fly-half Bernard Foley kicked all Australia's points, with Dan Bigger twice on target for Wales.
Australia now face Scotland in the quarter-final on 18 October, with Wales against South Africa the day before.
It was Wales' 11th consecutive defeat against the Australians, a run going back to 2008.
(BBC)