BEREA — There’s another new, gaping hole in the middle of the Browns’ defense.

They may actually be able to plug it this time.

Starting inside linebacker D’Qwell Jackson, who initially feared he might be lost for the season, will be sidelined for at least a few weeks with a strained right pectoral muscle, the second chest muscle injury the dependable four-year veteran has sustained in less than a year.

On Thursday, Jackson got positive news on the injury when he got a second opinion from the surgeon who reattached his left pectoral muscle in October. Dr. Frank Cordasco agreed with the diagnosis by Cleveland’s medical staff and determined Jackson will not need surgery, said a person familiar with the injury who spoke on condition of anonymity because of medical privacy laws.