ASHBURN, Virginia — Nose tackle Terrance Knighton and linebacker Keenan Robinson are listed as questionable for the Washington Redskins' game at the Carolina Panthers on Sunday.
Knighton was limited in practice Friday because he is dealing with cluster headaches that held him out of a game two weeks ago. Robinson missed last week's game with a bad shoulder.
Knighton sat out practice Thursday to see a specialist for what coach Jay Gruden called "a follow-up" visit. Said Gruden: "Hopefully, they did something to give some relief to his headaches."
Backup safety Trenton Robinson will miss Sunday's game with a hamstring injury.
Washington is 4-5. Carolina is 9-0.