The Wallaroos have been urged to be bold in their sudden-death Rugby World Cup quarterfinal with Canada.

Australia is the underdog in the last-eight clash against world number two Canada in Bristol on Sunday morning AEST.

But coach Jo Yapp, who could be overseeing her final match in charge of the Wallaroos, is determined her squad makes the most of their opportunity at causing a tournament upset.

"From our perspective, the message is, 'Don't come off the field thinking about ifs, buts and maybes,'" said Yapp, who will step down from her role at the conclusion of the Wallaroos's campaign.

"We get one shot at this, so we've got to be brave, and we've got to go at them both in attack and defence."

Defeated Wallaroos still battle into World Cup quarters Photo shows A group of Australia

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