The Facts: Montgomery, who went down in practice Wednesday with a groin injury, is expected to be out 2-4 weeks, NFL Network Insider Ian Rapoport reported, per a source.

Diehards Line: That gives him a chance of being out on the field for the opener against the Detroit Lions. But that timeline could extend into the regular season. If the Bears do have to make do without Montgomery in the opening weeks, they could turn to Tarik Cohen, Cordarrelle Patterson, Ryan Nall, and Artavis Price.