WASHINGTON – Washington Commanders running back Brian Robinson Jr. will not play Sunday against the Pittsburgh Steelers due to a hamstring injury.

Robinson was ruled out Friday. This is the second straight game the team’s leading rusher will miss after he was scratched late last week at the New York Giants.

The 25-year-old was also out Oct. 13 in Baltimore with a knee injury, the Commanders’ only loss since the season opener. Robinson rushed for 461 yards and six touchdowns on 101 carries in seven games.

Austin Ekeler, Jeremy McNichols and Chris Rodriguez Jr. will split duties in Robinson’s absence.

On defense, Washington (7-2) will be without cornerback Marshon Lattimore after acquiring him from New Orleans earlier in the week at the NFL trade deadline. Lattimore has also been recovering from a hamstring injury that arose during a game last month with the Saints.

Lattimore said he does not know when he will be cleared to make his debut as Commander.

“That’s up to the coaches,” Lattimore said Wednesday. “The injury just happened, so I don’t really know what’s going on as far as schedule or return to the field. It depends on them.”

Steelers linebacker Nick Herbig (hamstring) and safety Terrell Edmunds (illness) are out, while special teams contributors Tyler Matakevich (hamstring) and Ben Skowronek (shoulder) are questionable. Rookie center Zach Frazier will begin missing two games with an ankle injury, and kick returner and running back Cordarrelle Patterson is expected to play for the first time since the loss to Indianapolis on Sept. 29.

Justin Fields is also healthy enough to back up Russell Wilson in Pittsburgh (6-2). Commanders rookie quarterback Jayden Daniels is completely off the injury report after playing the last two games with rib soreness.