Robinson was a non-participant at practice Wednesday due to a knee injury.
Neither Robinson nor Antonio Gibson (knee/foot) logged any on-field work to begin Week 18 prep, so the Commanders backfield currently is without its top two options. Gibson sat out Week 17 due to his pair of injuries, while Robinson's health concern is a new one, so the entire situation will be one to watch to get a sense of who may be available Sunday versus the Cowboys. Currently, Jonathan Williams is the only healthy running back on Washington's active roster, and Jaret Patterson is a candidate to be elevated from the practice squad if either or both of Robinson and Gibson end up sidelined for Week 18.