Twice a day, multiple days a week, Drew Lock can be found in a barren room at the Broncos’ training facility wearing a headset and throwing against air. There are no Broncos logos in this room. No photos of past Super Bowls or Von Miller’s sacks adorning the walls. A flat-screen TV mounted on a rolling stand is stationed at the far end as the centerpiece, and a laptop connected to a headset rests on a laminate desk along the sidewall.



And that’s about it.



For more than 10 weeks, this former maintenance room has been Lock’s practice field, where he takes his reps against the Broncos’ scout-team defense from the viewpoint of Joe Flacco. The second-round rookie quarterback was placed on injured reserve after spraining his right thumb in a preseason game, and his on-field work has since been limited to mostly observation. He’s still attended daily team meetings and has continued to study his playbook and review film cutups. But the bulk...