The Socceroos know they have one weapon at their disposal that hasn't started firing yet this World Cup.
When Australia win an attacking free-kick or corner, there is a familiar sight: towering central defender Harry Souttar making his way up the field then jostling for position.
Souttar, 27, started his international career with a goal-scoring flurry in preliminary Asian qualifiers, with his height, size, and well-placed headers proving too tricky too handle.
