Glass scored a goal on three shots in Tuesday's 6-2 loss to the Avalanche.

Glass notched an assist in Friday's 4-2 loss to the Rangers.

Glass (concussion) was taken off injured reserve Tuesday.

Glass (concussion) will not be available against the Panthers on Tuesday, Penguins play-by-play announcer Josh Getzoff relays.

Glass (concussion) won't play Friday versus the Canucks.

Glass (concussion) has been ruled out for Wednesday's game against the Canucks, Penguins play-by-play announcer Josh Getzoff reports.

Glass (concussion) was designated as day-to-day by head coach Mike Sullivan ahead of Wednesday's clash with the Canucks, Seth Rorabaugh of Tribune-Review Sports reports.

Glass was diagnosed with a concussion, Michelle Crechiolo of the Penguins' official site reports Sunday.

Glass (upper body) was put on injured reserve Friday, per the NHL media site.

Glass logged an assist and two hits in Thursday's 2-1 overtime win over the Ducks.