Packers LB Isaiah McDuffie left Sunday night's win over the Vikings with a concussion. He was filling in for LB De'Vondre Campbell (neck), so we'll see about the status of both players for a Week 18 matchup with the Bears. Green Bay holds the No. 7 position in NFC playoff seeding right now but could still be passed with a loss to Chicago.

The Packers have ruled LB De'Vondre Campbell (neck) out for Sunday's game against the Panthers. That pushes Isaiah McDuffie into the starting lineup for what will be his eighth start. McDuffie tallied at least 5 solos in each of those seven previous starts and averaged 9.1 total tackles. He'll be an option for tackle-friendly IDP lineups. McDuffie sits in LB3 territory of our Week 16 rankings. Quay Walker spent the whole practice week limited but carries no injury designation into the game. He should be fine to use. Green Bay also ruled out S Darnell Savage (shoulder).

Packers LB Quay Walker (shoulder) is doubtful for Monday night's game against the Giants. We've knocked him out of the Week 14 LB rankings after a week of missed practices. Isaiah McDuffie will fill in but doesn't carry as much IDP upside.

Packers LB De'Vondre Campbell (neck) is inactive for today's game against the Lions. He seemed on track to play after putting in a full Wednesday practice. Instead Isaiah McDuffie should start in Campbell's place, next to Quay Walker. Check our updated Week 12 LB rankings.