Kelly had two carries for 13 yards in Thursday's 17-14 win over the Broncos.
Kelly was added to the active roster off the Browns' practice squad, as both Nick Chubb (calf) and Kareem Hunt (calf) were sidelined. The 25-year-old was on the field for three snaps and served as the third back behind D'Ernest Johnson and Demetric Felton. Chubb, who has missed two games but isn't on injured reserve, could return to action Week 8 against the Steelers. If he does, Kelly is unlikely to remain on the active roster for that contest.