Sermon was signed off Indianapolis' practice squad to the active roster ahead of Sunday's game at Baltimore, James Boyd of The Athletic reports.
The Colts waived Deon Jackson in a corresponding move. Sermon will likely serve as the No. 3 running back on the depth chart behind starter Zack Moss and backup Jake Funk. Sermon may not play any snaps on offense and will likely be used as insurance instead. Sermon may also not be on the active roster long if Jonathan Taylor (ankle) returns from the reserve/PUP list Week 5.