Oct. 5 (UPI) -- Chicago Bears running back David Montgomery is expected to miss four to five weeks of action due to the left knee injury he sustained in a Week 4 win over the Detroit Lions.
Sources told ESPN, NFL Network and the Chicago Tribune on Tuesday about Montgomery's timeline to return from the knee sprain.
Montgomery ran for 106 yards and two scores on 23 carries in the Bears' win over the Lions on Sunday in Chicago. He left the game in the fourth quarter and did not return.
Bears coach Matt Nagy told reporters Sunday that he "didn't know" enough about Montgomery's injury when asked for an update at his postgame news conference.
Damien Williams is expected to start for the Bears at running back in Week 5. Khalil Herbert, the third-string running back, will likely back up Williams until Montgomery returns.
Williams totaled 70 yards from scrimmage and a touchdown on 10 touches in Week 4. He sustained a thigh bruise Sunday, but is expected to be available.
Starting quarterback Andy Dalton missed the Bears' last two games due to a left knee injury. Nagy told reporters Monday that he will give an update on Dalton's status at his Wednesday news conference.
The Bears (2-2) battle the Las Vegas Raiders (3-1) at 4:05 p.m. EDT Sunday in Paradise, Nevada.
