NAPA _ Left tackle Jared Veldheer will undergo surgery for a torn left triceps and will miss a significant portion of the season, Raiders coach Dennis Allen said Wednesday.

Veldheer underwent a second MRI in 10 days Tuesday, and after talking with doctors and the coaching staff, elected to have surgery. Allen said Veldheer will likely be placed on injured reserve but designated for return, meaning he would miss a minimum of six weeks.

A fourth-year player out of Hillsdale, Veldheer, in the final year of his contract, is considered an ascending player and the closest thing the Raiders have to a Pro Bowl-caliber lineman.

Oakland Raiders offensive tackle Jared Veldheer during their football training camp in Napa, Calif., Tuesday, August 3, 2010. (AP Photo/Eric Risberg)
Oakland Raiders offensive tackle Jared Veldheer during their football training camp in Napa, Calif., Tuesday, August 3, 2010. (AP Photo/Eric Risberg) (Eric Risberg)

Veteran Alex Barron, a former first-round draft pick for the St. Louis Rams, will start at left tackle. With Mike Brisiel still out, Andre Gurode is the likely starter at right guard.

In other news from the Raiders training camp practice Wednesday morning:

  • The Raiders still have yet to see their projected first-team defensive line play together during training camp. Tackles Pat Sims and Vance Walker remain out with undisclosed injuries, with Christo Bilukidi and rookie Stacy McGee getting the first team work inside with Jason Hunter and Lamarr Houston on the outside.

  • Linebacker Nick Roach was back and working with the first team after failing to complete practice Tuesday.


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  • The Raiders practiced in shorts and shells and will have a walk-through Thursday before heading to New Orleans.

  • Players who remained out of practice included wide receiver Jacoby Ford and cornerback Tracy Porter. D.J. Hayden worked with the first team in place of Porter but won't be cleared for contact until Friday, leaving Phillip Adams as the possible starter along with Mike Jenkins.

  • Jenkins jumped a pass route during 7-on-7 drills and took a Matt Flynn pass the other way.

  • Flynn later showed an ability to throw a deep ball with touch, finding Rod Streater for 50-yard strike to the goal line.

  • Backup Terrelle Pryor, who struggled with his passing the previous day, had a solid day with both short and intermediate throws.

  • Undrafted rookie wide receiver Connor Vernon made a couple of nice catches during 7-on-7 sessions.

    For more on the Raiders, visit the Inside the Oakland Raiders blog at ibabuzz.com/oaklandraiders. Follow Jerry McDonald on Twitter at twitter.com/Jerrymcd.