ALAMEDA — Philip Rivers is on a record pace, with the San Diego Chargers quarterback on track to set the NFL mark for passing yards in a season.

Fresh off throwing for a franchise-record 503 yards in a loss to the Green Bay Packers, Rivers is averaging 352.7 yards per game. If he maintains that, he would throw for 5,643 yards to top Peyton Manning’s single-season mark of 5,477.

The Raiders choose to look at that as an opportunity.

“Let’s cut that down a little bit,” Raiders cornerback DJ Hayden said. “Yeah, he threw for 500 yards last week, but that was last week. It’s a new week. I’m looking forward to the game.”

Rivers’ 43 completions against Green Bay set an NFL record for a losing effort and tied for the second most ever in a game. He attempted a franchise-record 65 passes and didn’t throw an interception. That’s what the Raiders want to change.

“You want to be in position to make plays,” cornerback David Amerson said. “With him throwing the ball so much, it’s going to give more opportunities for us. We’ve just got to take advantage of it.”

Rivers was sacked three times by the Packers, all in the second half. Considering the Chargers are playing with a rebuilt offensive line minus three starters out with injuries, it could be worse.

“We dropped back 65 times, and they did a heck of a job,” Rivers said on a conference call. “We have a great deal of confidence in them.”

Part of Rivers’ effectiveness, particularly against Green Bay, has been his ability to get the ball out quickly. That’s what the Raiders saw out of Cincinnati’s Andy Dalton and Baltimore’s Joe Flacco the first two weeks of the season when they were held without a sack.

If Khalil Mack and Aldon Smith are to make an impact rushing Rivers, the secondary will have to find a way to prevent those quick passes while still avoiding giving up the deep ball.

“We have to buy time for our rush to get there to kind of make him feel uncomfortable,” cornerback/safety TJ Carrie said of Rivers. “Him being able to get the ball out quickly is something that we’re definitely going to have to monitor and put in a game plan to allow him to hesitate a little bit to give us a little more (time) on the rush.”

Keenan Allen has been Rivers’ best safety valve. He caught 14 passes for 157 yards Sunday before leaving the game with a hip injury and has an NFL-best 53 catches for 601 yards. The former Cal star is the first player in NFL history with three games of 12-plus catches in the first six games of a season.

Then there’s Antonio Gates. The future Hall of Fame tight end missed the first four games of the year while serving an NFL suspension for a performance enhancing substance but has caught 18 passes for 187 yards and two touchdowns in his two games back.

“It’s great to have great players on your football team, and when he came back, he came back in great shape,” Chargers coach Mike McCoy said. “He had the success he did the past two weeks because of that.”

Allen and Amerson grew up in Greensboro, North Carolina, playing pickup basketball against each other. They faced each other once on the football field in high school with Amerson’s Dudley High team beating Allen’s Northern Guilford squad 12-7. Amerson also got the better of Allen during their rookie NFL season in 2013 when he played for Washington in a 30-24 win over the Chargers. They trained for the NFL draft together, and Amerson knows the type of competitor Allen is, so he’s not expecting the hip injury that kept him out of Wednesday’s practice to impact him. “Knowing Keenan, he’s a competitor,” Amerson said. “He’s going to come out and play hard.”