The Philadelphia Flyers will be without defenseman Nicklas Grossman for Game 5 of their Eastern Conference quarterfinal series against the Penguins in Pittsburgh on Friday.

Grossman suffered what the team has termed as an upper-body injury, but is believed to be a concussion, in Game 4 on Wednesday, which the Flyers lost 10-3.

Erik Gustafsson will take Grossman's spot on the roster. He posted one goal and four assists with a plus-12 over 30 games this season with the Flyers.

The Flyers lead the best-of-seven series, 3-1.