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Rams quarterback Sam Bradford injured his knee on Sunday. The Rams feared he has a torn ACL. (Which is typically the fear when a guy injures his knee.)

Per a league source, those fears have come to fruition. Bradford has a torn ACL.

The diagnosis has been made via MRI performed on Sunday night. Bradford will undoubtedly have surgery, and he’ll be done for the rest of the year.

The Rams now will hand the reins to Kellen Clemens — unless and until they add someone who wrests the job away from him.