Broncos put Dalton Risner, Marlon Mack on IR

The Denver Broncos placed offensive lineman Dalton Risner and running back Marlon Mack on injured reserve Tuesday, ending their seasons.

In corresponding moves, the Broncos promoted cornerback Ja'Quan McMillian and offensive tackle Will Sherman from the practice squad to the active roster.

Risner sustained a UCL strain in his left elbow in last week's loss to Kansas City. Mack also was injured last week, sustaining a ha