Darby (shoulder) has been ruled out for Saturday's game against Kansas City, Aric DiLalla of the Broncos' official site reports.
Darby was knocked out of the Broncos' Week 16 loss to the Bears with a shoulder injury and will be forced to miss a second consecutive game to close out the regular season. Kyle Fuller should see increased run once again Saturday, while Darby finishes the 2021 campaign with 53 tackles (42 solo) and six pass defenses across 11 appearances.