The Panthers lost one pass rusher this week, but got another one back.
Carolina reactivated defensive end Ryan Delaire on Friday, when the Panthers ruled team sacks leader Mario Addison out of Sunday's game at Oakland with a right foot injury.
Delaire was on injured reserve for two months following arthroscopic knee surgery. He won't replace the production of Addison, who's matched a career high with 6.5 sacks.
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But Delaire gives the Panthers another edge-rushing option.
"He had a good week of work. And during his whole process, he's worked very hard," Panthers coach Ron Rivera said. "You would have no idea he was (out two months)."
Activating Delaire was one of several roster moves the Panthers made Friday.
They placed left tackle Michael Oher (concussion) and rookie cornerback Zack Sanchez (sports hernia) on injured reserve and waived seldom-used offensive tackle Donald Hawkins.
To replace Sanchez and Hawkins on the roster, the Panthers signed cornerback Lou Young and offensive lineman David Yankey from the practice squad.