Starting linebacker Travian Smith and backup running back Justin
Fargas also were placed on IR by the Raiders, who have lost eight
players to season-ending injuries since the regular season began.
Quarterbacks Rich Gannon and Marques Tuiasosopo, offensive
lineman Matt Stinchcomb and defensive end Sam Williams all were
placed on IR by the Raiders earlier this month. Linebacker Bill
Romanowski landed on injured reserve Oct. 23.
Armstrong was placed on injured reserve for the third straight
season. He tore an Achilles' tendon early in 2001 and returned the
following year, only to go on IR with a groin tear last January.
The 38-year-old defensive end is 15th on the NFL's career list
with 106 sacks. He partially dislocated his left shoulder during
Oakland's 28-18 victory over Minnesota last Sunday.
Smith, a six-year NFL veteran who started the last seven games
in place of Romanowski, tore a ligament in his left knee in the win
over Minnesota. Fargas, the team's backup to Tyrone Wheatley while
Charlie Garner recovers from a back injury, also tore a knee
Oakland's four roster vacancies -- the Raiders still hadn't
signed anyone to replace Williams, who was put on IR on Monday --
were filled by running back J.R. Redmond, defensive end Lorenzo
Bromell, linebacker Larry Atkins and guard Corey Hulsey.
Redmond, once a third-round draft pick by New England, was the
team's second-leading rusher in 2000. He was released by the
Patriots at the end of training camp in August.
Oakland also signed running back J.R. Johnson and defensive back
Carey Scott to its practice squad after releasing running back
Santonio Beard and tackle Matt Knutson.