The Washington Redskins likely will be without linebacker Brian Orakpo for at least one game.

   Reserve linebacker Rob Jackson said Monday that he spoke to Orakpo on Sunday evening and that it doesn’t appear that Orakpo will be able to play this week.
   Jackson said he and fellow backup linebacker Chris Wilson likely will play bigger roles when the Redskins host the Cincinnati Bengals on Sunday.
   Orakpo appeared to aggravate an injury to his left pectoral muscle during Sunday’s loss at St. Louis. Orakpo attempted to return to the game multiple times but was unable to finish it.
   He underwent offseason surgery for a partially torn left pectoral muscle suffered in last season’s finale. Orakpo aggravated the injury in the second preseason game and missed the final two exhibition games but was back in the lineup for the Redskins’ season-opening victory at New Orleans.