Jason Campbell survives injury scare

SAN DIEGO -- The Raiders received a scare in the third quarter when quarterback Jason Campbell left the field with an apparent lower leg injury.

He was replaced by Kyle Boller for one snap where Oakland ran a reverse play. Boller is now Campbell’s backup because Bruce Gradkowski went on the injured reserve with a shoulder injury last week.

Campbell has been very efficient Sunday as the Raiders are stunning the Chargers 21-3 late in the third quarter. Enjoying a revived running game, Campbell has completed 8 of 13 passes for 71 yards.