Coach Dan Campbell said Wednesday that Swift is "improving" through his AC joint sprain, but he wouldn't provide an update on his potential to return, Eric Woodyard of ESPN.com reports.

EDGE Analysis

The Lions held a walkthrough session to kick off Week 14 prep, but it seems as if Swift wasn't out there with his backfield mates. The second-year running back already has missed one game as a result of the injury, and there's a chance he's poised for another Sunday at Denver if he can't get back on the practice field by Friday. At the moment, Jamaal Williams, Godwin Igwebuike and Jermar Jefferson are the healthy backs on Detroit's active roster.