The Chargers placed DE Vaughn Martin and S Darrell Stuckey on injured reserve and signed LB Gary Guyton and re-signed RB Curtis Brinkley.
Martin, who injured his right groin prior to Sunday’s game against the Steelers, had 19 tackles and one sack this season.
Stuckey is the Chargers’ special-teams captain. He led the team with 10 special-teams tackles and also had a pair of forced fumbles and fumble recoveries.
Guyton played for the Patriots in the previous four seasons. Brinkley played in seven games for the Chargers earlier this season and had 29 carries for 60 yards and nine catches for 63 yards.