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Redskins LB Rob Jackson suspended for four games

Redskins linebacker Rob Jackson has been suspended by the NFL for the first four games of the 2013 season, multiple NFL sources confirmed Wednesday night. The NFL has confirmed the suspension, which means the appeal process is over. According to 106.7 The Fan, the Redskins knew about the suspension before re-signing him to a one-year deal earlier this month.

A league source confirmed that Jackson’s positive test came from a banned substance found in an unprescribed pain medication.

Jackson started the final 15 games at outside linebacker this past season for the injured Brian Orakpo and fared well. Jackson finished with 4 1/2 sacks, four interceptions and two forced fumbles. He was a restricted free agent, but signed before free agency began.

Without Jackson the Redskins would lose their top reserve outside linebacker. Orakpo will start if healthy alongside Ryan Kerrigan. They lost Lorenzo Alexander to Arizona last week; Alexander could play inside or outside in a pinch. Bryan Kehl, who re-signed last week, has almost exclusively played inside linebacker in his career but did take snaps at outside last preseason.