Just when he seemed poised to take off, D'Andre Swift has been grounded.
The rookie running back for the Lions suffered a brain injury this week and likely won't be able to clear concussion protocol in time to play Sunday against the Panthers.
Matt Patricia hasn't divulged any specifics on the injury, namely how it happened. Swift practiced fully on Wednesday before missing practice Thursday. His injury was reported by the Lions later that afternoon.
In order to clear protocol, Swift must participate in a full-speed workout without showing any symptoms, then must participate in a full-contact practice without showing any symptoms. Then he must be cleared by an independent neurologist.
It's likely too late in the week for Swift to clear those hurdles.
So the Lions will be without their No. 1 running back Sunday, and they could be without their No. 1 receiver, too. Kenny Golladay was on the sidelines Thursday due to his hip injury after returning to practice in a limited capacity Wednesday.
Danny Amendola, also nursing a hip injury, missed practice on Thursday as well.