If the are going to turn their season around under interim coach , they will have to do it without Kamal Martin Jersey a key defensive starter.The team announced Wednesday that middle linebacker has been placed on season-ending injured reserve.Roach played every defensive snap A.J. Bouye Jersey in 2013, but has mi sed all four games this season after suffering a concu sion in an Aug. 22 preseason game.Signed through 2016, Roach is due Colin Thompson Jersey $2.8 million next season. As he's still experiencing symptoms from his concu sion, it's not a lock that he will resume his career in Oakland.The signed former linebacker for depth behind , who has been shifted over the from weak side. With Burris Chuba Hubbard Jersey in the middle, Jason Tarver's defense ranks 31st against the run this season -- despite excellent run support from rookie on the Sam Mills Jersey outside.The latest discu ses the top 10 disappointments and breaks down the surprising NFC East. Find more Around The NFL content on .