Montgomery (ribs) was a non-participant during Wednesday's walk-through practice.
Montgomery was knocked out of the Lions' Week 6 win over the Buccaneers with what eventually was termed a rib cartilage issue, which head coach Dan Campbell told Colton Pouncy of The Athletic on Monday likely will result in at least one missed game. Meanwhile, No. 2 running back Jahmyr Gibbs was listed as a limited participant Wednesday, and reserve Craig Reynolds sat out due to hamstring and toe issues. With all three of Detriot's backfield options banged up at the moment, the overall situation will be one to watch as the week goes on to see who may be able to play Sunday at Baltimore.