Benson (ankle) didn't take part in Wednesday's practice, Josh Weinfuss of ESPN.com reports.
Benson was removed from the second half of this past Sunday's win against the Patriots due to an ankle injury, which so far is keeping him off the practice field to begin Week 16 prep. With Emari Demercado (back) on injured reserve, DeeJay Dallas is the only other running back on the Cardinals' active roster aside from starter James Conner. Meanwhile, Michael Carter and Tony Jones loom as backfield options on the practice squad.