Jost (undisclosed) won't play Sunday against the Flames, Lance Lysowski of The Buffalo News reports.
Jost missed practice Saturday and will now miss at least one game as well. The 26-year-old center hasn't registered a point since Dec. 2 -- he has two goals and four points in 36 games this season. Eric Robinson will rejoin the Sabres' fourth line in Jost's absence.