Horwill hails 'massive effort' from Wallabies

Australia captain James Horwill says his side had to dig deep to win their World Cup quarter-final against South Africa.

The Wallabies won the tight encounter in Wellington 11-9, but had to endure relentless pressure from their opponents.

Horwill admits his side will have to play better in the semi-final against home favourites New Zealand on Sunday if they are to make the final.

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