Baltimore Ravens cornerback Lardarius Webb is not expected to play the season opener against the Cincinnati Bengals "barring a surprise," according to the NFL Network.

Webb is listed as questionable with a back injury that sidelined him for the entire preseason, but he had full participation in every practice leading up to Sunday's game. A three-year starter, Webb declined through a spokesman to talk to reporters Friday.

If Webb is inactive, the Ravens would be down to three cornerbacks: Jimmy Smith, Chykie Brown and Asa Jackson. Smith (chest) and Jackson (ankle) each missed preseason games with injuries, but neither were listed on the injury report.

Losing Webb would be a major blow to the defense because either Brown or Jackson would have to start alongside Smith. In the preseason, the Ravens were more comfortable starting Brown because he has more size to match up on the outside. Jackson typically lined up against the slot receiver.

If Webb doesn't play, it would make Saturday's release of cornerback Derek Cox a peculiar move. Cox, who has 56 career starts, has more experience than Brown and Jackson, who have a combined one NFL start.

Ravens safeties Terrence Brooks and Anthony Levine can each play cornerback as well, which gives the team extra depth at that position.