Kris Letang left the game midway through the first period after a high hit from Eric Nystrom. Letang already missed almost two months with a concussion, so there is obvious cause for concern here.
Steve Sullivan also left last night's game with a UBI after scoring his 12th goal of the year.
Tyler Kennedy has been cleared for contact and should return soon.
Paul Gaustad will practice with the Predators today and is expected to make his Nashville debut on Saturday.
Martin Havlat has been skating for a week but there is still no timetable for his return.
Logan Couture is a game-time decision tonight.
Returning from the injured list last night: Jamie Benn and Brad Boyes