A voracious New York Giants pass rush delivered nine sacks on the star quarterback, inflicting a concussion along the way.
It's anybody's guess when he'll be able to start again.
Coach Lovie Smith said he'd start if he's "healthy and ready to go," but the NFLs newly aggressive emphasis on dealing with concussed players could hamper the effort to get him back in pads.
This week he'll have to meet with a series of doctors and undergo a number of tests designed to determine the severity of the concussion. Judging by the hits he absorbed from Osi Umenyiora and Justin Tuck, it's not looking good.
Back up Todd Collins suffered a stinger after taking a particulary vicious blind-side hit in the fourt quarter. That stinger could keep him on the sidelines for next week, meaning Caleb Hanie is the presumptive Bears starter for week 5.