Caleb Williams enters the 2025 season with clear goals: achieving a 70% pass completion rate and throwing for 4,000 yards. He is determined to reach these milestones, which will, in turn, support his wide receivers, particularly Rome Odunze and Olamide Zaccheaus, in filling the void left by Keenan Allen's departure.

Ben Johnson and staff will be looking for plenty of improvement across the board over the preseason opener but seeing their first-team offense function properly is huge.

When he takes the field Sunday against the Bills for his first preseason action of the year, Williams won’t be significantly closer to being the Bears' long-promised franchise quarterback than he was a year ago.

The Bills and Bears face off in a Sunday night preseason game. Here's how to watch Caleb Williams and other players in action.