Wallaby wing Nick Cummins suffered a setback when he sustained an ankle injury while on duty for Australia at the Hong Kong Sevens.
Cummins, who was a late addition to Australia's Sevens squad as a replacement for Henry Hutchison, has been ruled out for up to a month and will miss the Singapore leg of World Rugby's Sevens Series this weekend.
The injury means Cummins will just have the Paris and London legs of the World Series in May to prove to Australia Sevens head coach Andy Friend that he deserves to be in Australia's squad for the Olympics Games in Rio de Janeiro during August.
"He needs to get home and checked," Friend told the Sydney Morning Herald.
"The smartest thing is to get him home and get him an opportunity to get some rehab.
"Whilst we sat him on the bench, in all seriousness it was only going to be if we had nothing else. It was a pretty serious ankle injury. He certainly wouldn't have been at 100 percent if he got out on the field. It was definitely giving him some grief."
Friend said Cummins injured himself during his first or second carry in Australia's 28-0 triumph over Argentina in their tournament opener in Hong Kong.
"When Nick Cummins makes a line break, Nick Cummins normally scores from a line break … we realised there was something wrong," he added.
"I thought he showed great character and fight to continue playing on with that, but it was only afterwards that he realised how serious it was."