ALLEN PARK — The Lions signed veteran wide receiver Dane Looker and veteran offensive guard Terrance Metcalf today.
Looker, who played college ball at Washington, played the last eight seasons for the St. Louis Rams.
  Metcalf played the last seven years with the Chicago Bears.
To make room on the roster they released wide receiver Bobby Sippio and offensive tackle Kirk Barton who had been sidelined with a hamstring injury.
  Injuries have been a story for the Lions who played Saturday without 16 of their 80 roster players.
   LB Cody Spencer suffered a serious knee injury in the game, but Martin Mayhew, the Lions general manager, said more tests were being done.
    SS Daniel Bullocks has missed most of the offseason workouts and much of camp with knee woes. It’s the same knee that he tore up in the 2007 preseason.
   TE Casey Fitzsimmons, who has been out with an ankle injury, was involved in some individual drills today. Coach Jim Schwartz said he’s still not day to day, but he’s getting closer.
   Wide receivers Calvin Johnson (sprained thumb) and Bryant Johnson (road rash) saw limited work in individual drills.
  RB Kevin Smith missed practice for personal reasons.
— PAULA PASCHE