Bears nickel CB Bryce Callahan was ruled out early in the second half vs. the Rams after suffering a foot injury before intermission.
Callahan, 27, had appeared in the first 12 games of the season, making nine starts, prior to getting injured Sunday night. Durability is pretty much the one remaining rub in Year 4 — his contract season — for Callahan, the 5-foot-9, 188-pound former undrafted free agent out of Rice.