That could line him up for a return in the postseason, but in the immediate, the Lions have a No. 1 seed to chase. The Lions boasted one of the deeper linebacking rooms to start the season, but they’re now missing three key pieces: Anzalone,

He was the defensive play-caller and a captain as well. With this injury, the Lions have now lost four members of their Week 1 starting defense to significant injuries. As a result, the Lions will need to add depth to a group that has dealt with injuries all year.

Alex Anzalone injured his left arm in the second quarter of the Detroit Lions game vs. Jacksonville Jaguars at Ford Field. Here's the injury update.