Scotland are sweating over the fitness of wing Tim Visser and centre Duncan Taylor, who will not train in the team's three-day training camp this week.
Visser sustained a leg injury in Edinburgh's PRO12 victory over Treviso on Friday and will undergo an MRI scan. He stays with his club.
Saracens centre Taylor suffered abdomen and shoulder damage in his club's match against Northampton and is also with his club medics.
Scotland are set to face Japan (9 November), South Africa (17 November) and Australia (23 November) at Murrayfield in the coming weeks.