One of the biggest preseason delights for Chicago has been defensive end Austin Booker, who has four sacks already. After picking up his fourth sack of the preseason in this game against Buffalo, Booker met with the medical staff and then was later ruled out with a knee injury.

The Buffalo Bills defense was constantly carved up while the offense converted just one first down on its first four drives.

The Bears host the Bills in NFL preseason action at 8 p.m. ET on FOX, with Chicago's starters expected to take the field.