RENTON, Wash. (AP) — The Seattle Seahawks have placed guard Jordan Simmons on injured reserve after he suffered a knee injury last week against San Francisco. Seattle also signed rookie running back Bo Scarbrough off the Jacksonville practice squad Tuesday. Coach Pete Carroll sounded ominous Monday when asked about Simmons, saying the knee injury was going to be an issue. Simmons had played well in his three starts this season while filling in when D.J.