Panthers put starting S Juston Burris (groin) on IR

The NFL's top-ranked defense took another hit to its secondary Tuesday.

The Carolina Panthers put starting safety Juston Burris on injured reserve with a groin injury. He'll have to miss at least three weeks before being eligible to return. The earliest he can return is Week 7.

In a corresponding move, the Panthers signed center Sam Tecklenburg from their practice squad. He had been promoted to the active roster for all