Joel Armia and Paul Byron are week to week for the Montreal Canadiens.
Armia sustained an upper-body injury in a 6-2 win against the Winnipeg Jets on Monday. The forward has 21 points (12 goals, nine assists) in 35 games this season.
Byron has not played since Nov. 15 because of a knee injury. The forward has four points (one goal, three assists) in 19 games this season.
Center Jesperi Kotkaniemi, who hasn't played since Dec. 5 because of a concussion, could return to the lineup against the Tampa Bay Lightning on Saturday (7 p.m. ET; SN360, CITY, SNE, TVAS, SUN, NHL.TV), Canadiens coach Claude Julien said.
Kotkaniemi has five points (three goals, two assists) in 22 games this season.