Glasgow Warriors back Sean Lamont suffered ligament damage to his right ankle against the Ospreys on Friday, the Scottish club has announced.
Fortunately there was no fracture to the ankle in the RaboDirect PRO12 win at Liberty Stadium.
"He'll require a further review with the consultant at Spire Murrayfield over the next few weeks to determine the length of time he will remain on the sidelines. A further update will be provided following this assessment," read a statement.
"The Glasgow Warriors' medical team would like to extend their thanks to their counterparts at the Ospreys for their assistance on the night."