The Panthers' disappointing season has taken another hit, as they placed starting center Ryan Kalil and his backup, Gino Gradkowski, on injured reserve, the club announced on Tuesday.
Kalil, a five-time Pro Bowl selection, left Week 11 with a shoulder injury and didn't travel for the club's close loss versus the Raiders on Sunday. The 31-year-old started the first eight games of the season, then missed two before returning to play the Saints.
The 10-year veteran is under contract through 2018.
Gradkowski, his backup, heads to IR with an ankle injury. The 28-year-old started three games for the Panthers this season.