The Raiders have signed 28-year old guard Daniel Loper.  He played in 8 games (5 starts) for the Lions last season.  Loper has played in 48 games (5 starts) in his five years in the NFL.  The 6’6″, 320 pound Loper will provide depth on the O-Line for the Raiders in 2010 if he makes the team.  It never hurts to add a guy like Loper before training camp.