Montgomery (thigh) didn't practice Friday and is listed as doubtful for Sunday's game against Atlanta, Eric Woodyard of ESPN.com reports.
Montgomery already said he expected to miss time and then went through the week without practicing. He thus seems highly unlikely to play, though the Lions will leave the door open with a 'doubtful' designation in case Montgomery's thigh bruise improves dramatically between Friday evening and Sunday morning. The Falcons and Lions are scheduled for a 1:00 p.m. ET kickoff in a game that figures to draw extra attention from the fantasy world thanks to the presence of rookie RBs Jahmyr Gibbs and Bijan Robinson. Just don't be surprised if Craig Reynolds (for the Lions) and Tyler Allgeier (for the Falcons) also get a bunch of carries.