Impact Armstrong suffered the knee injury in Sunday's loss to the Cowboys after logging just four defensive snaps. The 28-year-old defensive lineman's season is over after compiling 24 tackles (16 solo), including a team-high 5.5 sacks. Washington already has several other edge defenders on injured reserve, so the team may need to look outside the organization for help at the position.
OCTOBER 20 • ROTOWIRE
