Calgary Flames forwards Daymond Langkow (neck) and Matt Stajan (shoulder) will be out action for an indefinite period of time, the club announced Monday.
Langkow suffered a season-ending neck injury in March. He has skated with the club during the pre-season, but has yet to be cleared for contact.
The 26-year-old Stajan suffered a separated shoulder against the Vancouver Canucks on the opening night of the pre-season.
Additionally, wingers Rene Bourque and Raitis Ivanans missed practice on Monday for general maintenance resulting from recent training and competition.