The Raiders signed veteran guard Daniel Loper on Friday in a move that gives them more depth and experience.
Loper, 28, played in 40 games for the Tennessee Titans from 2006-08 and eight for the Detroit Lions last season. His only five starts as an NFL player came for the Lions.
Robert Gallery and Cooper Carlisle are the projected starters at left and right guard, respectively. Loper will compete for a backup spot during training camp. He is 6-foot-6 and 320 pounds.
Brandon Rodd is the only other player on Oakland’s 80-man roster listed as guard. However, several other players are capable of playing the position, including rookie fourth-round draft pick Bruce Campbell, veterans Khalif Barnes, Langston Walker, Chris Morris and Erik Pears.
Campbell played offensive tackle at Maryland, but he has been switched to guard so that he can get more playing time right away, according to coach Tom Cable.
Walker and Chris Morris started several games at left guard last season in place of an injured Gallery. Barnes hasn’t started any games at guard during his five-year NFL career, though he has received practice time there with the Raiders. Pears’ natural position is offensive tackle, but Cable has worked on making him more versatile in case called upon in an emergency.