Andrew Symonds (left) and Mike Hussey (right) congratulate bowler Nathan Bracken after the dismissal of South African captain Graeme Smith.

South Africa tumbled to their lowest total in a World Cup match on Wednesday when they were dismissed for 149 from 43.5 overs by defending champions Australia in the second semi-final.

Captain Smith was first to go, bowled by Bracken after an ugly heave across the line that saw the ball clip the off-stump.

Photographs: Getty Images

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