Taniela Tupou doubtful for Australia's game against Fiji

Australia front-row Taniela Tupou is doubtful for their second World Cup game against Fiji in Saint-Etienne on Sunday following a hamstring problem.

Tupou was impressive for Australia in their 35-15 win over Georgia but did not train on Wednesday.

Wallabies attack coach Jason Ryles said a decision on Tupou's availability will be taken in due course of time.

“Taniela is on the sideline at the moment, he has got a bit of a hamstring complaint but we’re just going to monitor him and just see how he goes over the next couple of days,” Ryles told AAP.

“He didn’t train today but that’s not unusual for Taniela, don’t worry.”

Meanwhile, Ryles also said their most capped player James Slipper and Pone Fa’amausili are still recovering from their respective foot and calf injuries respectively.

“Slips (Slipper) has been managed at this stage,” said Ryles.

“I think he’s certainly in the picture but we’re not exactly sure how that’s going to pan out, whether it’s this week or next week.

“Himself and Pone have been doing a lot of stuff off field and then dropping into training at different stages with what their injuries allow them to and what the medical team allow them.”

Australia currenty are at the top of Pool C table following their 35-15 victory over Georgia.