The Bears defense has gone to sleep this week with visions of Adrian Peterson in its collective head. That may not be its sole cause for concern, however.
During the preseason, the Bears experimented with Blake Costanzo at middle linebacker with Brian Urlacher out while his injured knee healed.
Losing three out of four games constitutes falling off a seasons cliff for the Bears after a 7-1 start.
The date was October 14, 2007. The stage was Soldier Field.
In less than a calendar week, the Bears lost control of the NFC North and took it back again.