Injuries: Bills' Aaron Williams leaves in ambulance

The Falcons could be without their rookie running back for the remainder of the game.

Tevin Coleman was carted off the field against the Giants during the second quarter. The Falcons announced Coleman has a ribs injury and is questionable to return.

Coleman had 32 rushing yards on nine carries and a touchdown before the injury.

Linebacker Paul Worrilow (calf) is also questionable for Atlanta.

Here are other injuries we're keeping track of on Sunday:

1. Chicago Bears quarterback Jay Cutler is ruled out against the Arizona Cardinals with a hamstring injury. Jimmy Clausen is in at quarterback.

2. 49ers RB Carlos Hyde is questionable with a head injury. Hyde walked to the locker room on his own power…