Caroline Wozniacki seems a certain starter for the Australian Open in Melbourne next week after a scan on the world number one's injured left wrist showed no serious damage.

Wozniacki had her wrist strapped in the final set of her 3-6, 7-5, 6-2 loss to Poland's Agnieszka Radwanska in the Sydney International quarter-finals late on Wednesday.

While she feared a medical examination would rule her out of the year's first grand slam, a WTA official told Reuters the 21-year-old Dane had an MRI scan at a Sydney hospital on Thursday that showed inflammation but no serious damage.

"She's very confident she will be fit for Melbourne," the official said.