The Socceroos have given their hopes of qualifying for the World Cup last 16 a tremendous boost with a tense, battling 1-0 victory over Tunisia.
Mitch Duke's superb first-half header was the only goal of a hard-fought game, despite Tunisia laying siege to Australia's goal late in the second term.
However, the excellent Harry Souttar made a number of telling tackles and Mat Ryan some solid saves to preserve a rare clean sheet, Australia's first at a men's World Cup since 1974.