The Raiders have added another piece to the defense, as today they came to terms on a 1-year deal with DE Greg Spires. The veteran will compete for downs as pass rusher on the right side of the Raiders line. Spires became a free agent after he was released by Tampa Bay in a salary cap move in February. He has 39.5 sacks in his 10-year career, playing the past six seasons with the Buccaneers. He played only 10 games last year because of a calf injury. His best season came in 2004, when he had eight sacks.