The Saints have elevated Donaldson from the practice squad to the active roster ahead of Sunday's game against the Lions, Ross Jackson of WWL Louisiana reports.
Donaldson signed with the Saints' practice squad Sept. 2 after being a casualty of the team's Aug. 30 cuts. The running back will fill in for Audric Estime (thigh) as a reserve option behind Travis Etienne, Alvin Kamara (knee), and Kendre Miller while Estime recovers from his thigh issue on IR.