BOURBONNAIS, Ill. — Mitch Trubisky did something often during Monday’s practice that he rarely was afforded the opportunity to do as a rookie — throw it deep.



The Bears ran a drill that was pretty straightforward: Trubisky launching the ball down the field to his receivers, first without defenders, and then against defensive backs.



Remember last summer, when the deep ball was what separated Trubisky from a talent perspective from Mike Glennon? As efficient as Trubisky looked with long passes in Bourbonnais, he didn’t get to do it much in his first year. Chalk it up to not enough receivers who could get open deep, a reluctance from the play-caller to unleash Trubisky, or an offensive line that didn’t give him enough time.



Either way, seeing his tight spiral on the long, arcing passes served as a reminder that as much as Matt Nagy’s West Coast offense thrives with short-to-intermediate passes, Trubisky has the arm...