Edinburgh - Scotland's Six Nations hopes have taken a knock with the news that prop Moray Low will miss most of the campaign with a knee ligament injury.
Low and flyhalf Ruaridh Jackson sustained injuries during the first-half of Glasgow Warriors' match away to the Scarlets last Saturday.
Jackson was withdrawn with a leg injury when kicking an early penalty but no long-term issues were anticipated.
The 27-year-old Low, on the other hand, was given a bleaker assessment when he was told after a medical that he will be out for at least eight weeks.
Warriors head coach Sean Lineen said: "This is clearly very disappointing news for Moray.
"He's an ambitious player who is extremely keen to achieve success with both Glasgow and Scotland, and the injury has come at a very unfortunate time.
"He's a tough character, however, and I know he'll work hard to bounce back strongly.
"In terms of his rehab, he'll be in great hands with the medical and physio team we have here at the Warriors."
Jackson is expected to miss Glasgow's European Cup clash with Leinster at Firhill this weekend.
A Warriors spokesman said: "Ruaridh has reacted well to treatment since Saturday's game and the Warriors medical team are happy with his progress.
"He will continue to be monitored closely in the lead-in to our Heineken Cup matches and, from Scotland's perspective, for the Six Nations Championship."
Scotland open their Six Nations campaign with a home game against England on February 4.