Swift (shoulder) didn't participate in Wednesday's walk-through practice.
His absence comes as no surprise after head coach Dan Campbell gave a non-update on Swift earlier Wednesday, telling Eric Woodyard of ESPN.com that the running is "improving" but otherwise doesn't have a timeline for a return. With one absence under Swift's belt and potentially another to come Sunday in Denver, the Lions again may be forced to rely on Jamaal Williams, Godwin Igwebuike and Jermar Jefferson out of the backfield Week 14.