(Eds: Updates with details, quotes. With AP Photos.)
Ron Rivera arrived in Carolina with a reputation for transforming good defenses into great ones, which makes this season all the more frustrating for the first-year head coach.
The Carolina Panthers have placed former first-round draft pick and starting right tackle Jeff Otah on injured reserve for the third time in four seasons.
Carolina linebacker Thomas Davis has torn the anterior cruciate ligament in his right knee for the third time in less than 23 months.
Panthers starting weakside linebacker Jason Williams has been ruled out of Carolina's game against Atlanta with a knee injury, further depleting a thin unit.