Demercado was claimed off waivers by the Cowboys on Monday, Tom Pelissero of Netflix reports.
In the wake of Sunday's cut-down day, Dallas rostered just two running backs and a fullback on its active roster: Javonte Williams, Malik Davis and Hunter Luepke. With the addition of Demercado, the team gains an experienced hand who spent the first three seasons of his career with the Cardinals, averaging 6.5 YPC on his 126 carries to date.