3 Caleb Williams stats that Chicago Bears fans need to know 

1. Caleb Williams was horribly inaccurate in his debut

The biggest issue with Caleb Williams was how inaccurate he was. When you complete less than half of your passes that is quite obvious. Still, even PFF had him at a 62.5% adjusted accuracy rating, which was third worst in the NFL. Only Bryce Young and Anthony Richardson were less accurate than Williams in week one, per PFF.

Completion rate over expectation has similar results. They add in the difficulty of each pass and calculate how many completions each passer has greater than the expected completion rate for each pass. They have Caleb Williams at -19.7. Bryce Young is the next worst at -15.3, and Daniel Jones is next at -11. Williams had a CPOE that was twice as bad as every other quarterback. Last week, Justin Fields had a CPOE of 4.9, and last year, it was 0.8. 

Williams should be able to clean that up, and accuracy was never really a huge concern, so maybe it was a first-game jitters situation. Still, that is a bit alarming at this point. We will be waiting to track his progression next week.