Flyers forward Zac Rinaldo suffered a lower-body injury in Sunday's game against the Sabres and will not return per general manager Paul Holmgren.
Rinaldo was seen limping towards the Flyers' locker room with trainer Jim McCrossin after leaving the ice during the first period, and according to NBC's Pierre McGuire, it was because of a nasty skate cut. Rinaldo needed 20 stitches.
The 22-year-old played just under nine minutes in Saturday's loss to the Penguins and delivered a team-high seven hits.
During the lockout, Rinaldo appeared in 31 games for the Adirondack Phantoms of the AHL, collecting two goals, three assists and 92 penalty minutes.
Rinaldo had two goals, seven assists and 232 penalty minutes in 66 games for the Flyers last season.