Raiders need to work on defensive line

The Oakland Raiders have done a nice job by filling their starting linebacking crew in free agency, now they must work on their defensive line among other areas.

Oakland, which has six holes in the defensive starting lineup, has three openings on the defensive line to go along with Lamarr Houston. One option left in the form of Matt Shaughnessy. The former mid-round pick signed a one-year deal with Arizona.

Shaughnessy had potential and played well for Oakland, but he did not play well last season and was replaced by journeyman Andre Carter late in the season. Still, the Raiders have holes on the defensive line. Richard Seymour is a free agent and Tommy Kelly expects to be cut.

Second-year players Christo Bilukidi and Jack Crawford might get a chance. Oakland might draft Flordia’s Sharriff Floyd with the No. 3 pick, and has signed Cincinnati’s Pat Sims at defensive tackle, but Sims has started just one game in the past two years.

Thus, defensive line is a priority for Oakland.

In other AFC West notes:

The Chargers re-signed running back Ronnie Brown. On Friday, the Chargers signed Danny Woodhead. Both are different types of backs who will back up Ryan Mathews. I can still see the Chargers bringing in a running back, probably a bigger one, in free agency or in the draft.

Arizona signed former San Diego starting cornerback Antoine Cason to a one-year deal. The Chargers didn’t have much interest in bringing him back.

San Diego pass-rusher Antwan Barnes left his visit with the Jets without a deal.