The Chicago Bears already knew Caleb Williams was a unique physical specimen. He had a rocket right arm but the rare ability to alternate the speed of his throws. His accuracy was consistent, regardless of what angle he threw from. On top of that, he’s a good athlete. Williams might not be a speed freak like Justin Fields, but he is plenty fast enough to make defenses pay on the ground. None of that was a concern for GM Ryan Poles and head coach Matt Eberflus. What they needed to know was how the quarterback operated between the ears.