Case Keenum is not starting today because Tyson Bagent is the Bears’ QB2 on the depth chart.

The Chicago Bears are using a backup quarterback again this week, as Caleb Williams has been ruled out. As per SI, Williams is still recovering from a Grade 2 hamstring strain that he got in Week 2. Because of this, a backup quarterback has started in each of the last two weeks.
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What happened in Week 3 and Week 4
Case Keenum started in Week 3 and was sensational in the win over the Philadelphia Eagles. In Week 4, it was unofficially Tyson Bagent.
It was ‘unofficial’ because head coach Ben Johnson gave Keenum the first snap under center. This officially made Keenum the starter and got him the win. After that snap, Bagent, who was lined up out wide, played quarterback for the rest of the game, as per SI.
Why Bagent is starting and not Keenum
Many people thought Keenum should keep starting after his strong game in Week 3, but the Bears felt otherwise, because Bagent is the team’s QB2 on the depth chart, a job he earned in the offseason.
{{/usCountry}}Many people thought Keenum should keep starting after his strong game in Week 3, but the Bears felt otherwise, because Bagent is the team’s QB2 on the depth chart, a job he earned in the offseason.
{{/usCountry}}As per SI, the only reason Bagent did not start in Week 3 was that he had a concussion in the game before and did not have enough time to prepare for the Eagles.
Bagent was not as good as Keenum was in his “start” in Week 4, but he was still good. As per SI, most of his decisions were good ones, he was accurate and he had total command of the offense in the win over the New York Jets.
Bears depth chart
{{^htLoading}} Unit | Position | Starter | 2nd | 3rd | 4th |
| Offense | QB | Caleb Williams (O) | Tyson Bagent | Case Keenum | - |
| Offense | RB | D’Andre Swift | Kyle Monangai (O) | Roschon Johnson | Zavier Scott |
| Offense | WR | Rome Odunze | Zavion Thomas | - | - |
| Offense | WR | Luther Burden III | Jahdae Walker | - | - |
| Offense | WR | Kalif Raymond | - | - | - |
| Offense | TE | Colston Loveland | Cole Kmet | Sam Roush | Nikola Kalinic (IR) |
| Offense | LT | Ozzy Trapilo (O) | Theo Benedet | Braxton Jones (IR) | - |
| Offense | LG | Joe Thuney | Jordan McFadden | - | - |
| Offense | C | Garrett Bradbury | Logan Jones | - | - |
| Offense | RG | Jonah Jackson | Luke Newman | - | - |
| Offense | RT | Darnell Wright | Theo Benedet | - | - |