Sydney: Matt Giteau's World Cup hopes, and perhaps even his nine-year Test career, look to be hanging by a thread this week as Wallabies coach Robbie Deans ponders his options ahead of the announcement of his squad for rugby's showpiece event.

While Quade Cooper was further cementing his place as Australia's first-choice flyhalf in the 14-9 victory over the Springboks at the weekend, Giteau turned out in the losing cause for his club side Randwick in Sydney.

Although he played superbly and scored two tries, Giteau's star has fallen sufficiently that there would be no great surprise if he was to be omitted when Deans names his World Cup party on Thursday.

"We've got some tough calls to make this week and there is going to be some pain," Deans told reporters after the match in Durban.

Just two years ago, Giteau won the John Eales Medal and also earned a nomination for the IRB's world player of the year, the second time he had been included in the shortlist after 2004.