Washington next week plays at Philadelphia on Thursday. Lattimore worked with trainers on a separate field during practice Friday, but Quinn said the team will have a better assessment Monday of his chances to play against the Eagles.
Though Robinson already has missed two games this season, he leads the Commanders with 461 yards rushing and six touchdowns.
Washington will use a rotation at running back in Robinson’s absence, starting with Austin Ekeler and Jeremy McNichols. The Commanders also could promote another running back off the practice squad.
They have elevated Chris Rodriguez Jr. three times already, so if they do so again, according to the NFL rules regarding the practice squad, he will have to remain on the active roster.