SAN DIEGO — So much for Kamerion Wimbley’s sack slump.

Operating against overmatched Chargers left tackle Brandyn Dombrowski, Wimbley had four sacks of Philip Rivers and the Raiders had six overall in a 24-17 win over the San Diego Chargers on Thursday at Qualcomm Stadium.

Wimbley, who had just two sacks coming into the game after posting nine last season, said he was unconcerned.

“I think I’ve been getting pressure on the quarterback,” Wimbley said. “I’ve been getting some hits on the quarterback, and I’ve always thought that sacks come in bunches, and that’s what happened.”

Defensive end Desmond Bryant and defensive tackle Tommy Kelly also had sacks of Rivers in what was a dominant performance overall by the Oakland defensive line.

San Diego came into the game without starting guard Kris Dielman, out with a concussion. Early in the game, left tackle Marcus McNeill, who has been struggling of late anyway, left with an injury and was replaced by Dombrowski.

“(Rivers) can sling it around the field, and I just think when you have four guys that can rush the passer and their offensive line is down, it’s tough,” defensive tackle Richard Seymour said.

It helped the Raiders to get a lead, taking the run out of the equation for the Chargers.

“That team is built to be up 14-3 because they pound it — and obviously Carson Palmer played great today,” Rivers said, “and then they have a huge defensive front where they can rush four and play coverage, coverage, coverage because they know you’re going to throw it a lot.”

Wide receiver Jacoby Ford had to be helped from the field with a foot injury and was later seen on crutches and with his left foot in a boot. There was no immediate word about the severity of the injury. The Raiders don’t play until Nov. 20 in Minnesota.

Palmer finished 14 of 20 for 299 yards and two touchdowns, with both turnovers (a lost fumble and an interception) coming as the result of pressure and not poor decisions. “These guys have been playing a long time since training camp started, and I’m just getting rolling,” Palmer said. “It’s just weird. There’s no word to describe it. I’m going to keep grinding, keep working out, take care of my body, watch film and get this offense down.” Said coach Hue Jackson: “For a guy who’s coming off the couch that’s playing, having fun, I think what he is doing is phenomenal.”

Running back Michael Bush, besides having 157 yards on 30 carries, caught three passes for 85 yards, including a 55-yard gain and a 23-yard gain. “I was shocked, actually,” Bush said. “Usually I catch one and have to make two or three people miss. This time they just broke wide open.” His 242 yards from scrimmage were the most for the Raiders since the 1970 merger, surpassing Bo Jackson’s 235 yards against Seattle in 1987. It was the fourth-highest total in team history.

Oakland was the victim of a rule in the first quarter that had Raiders fans riled when Ford was shielded from a pass from punter Shane Lechler out of punt formation and no flag was thrown. Jackson didn’t like the call either but conceded afterward it was proper application. “There is no illegal contact out of punt formation,” Jackson said. “If he would have held him there would have been a penalty. It’s the rule, and I have to respect it.”