The Colts have a clear top three in their running back group with Marlon Mack, Nyheim Hines, and Jordan Wilkins. Mack is the every down back, Hines is the versatile back who can play some receiver, and Wilkins is a valued young player who could be a starter one day. The missing element they need in the backfield, though, is a power back who can pick up tough yards and protect Andrew Luck in the passing game.
The Colts tried multiple backs on the roster last year to fill this role, using players such as Christine Michael and Robert Turbin before finally settling for Jonathan Williams to close out the year.