What was Woodson's final game in Oakland -- and might have been the last for the Raiders as well -- was far from pretty but it ended in a victory.
"I guess it had to end like that," Woodson said. "It was a little much for me. I would have rather it had been a lopsided victory and we blew them out. That's the way it goes sometimes."
"This is my last game in the Coliseum but just know I'll never leave you," Woodson told the crowd. "Go Raiders!"
The Raiders won despite 15 penalties, including five on their overtime drive, and being held to one first down of the second half on a 3-yard touchdown drive.
"Charles is one of the greatest players to ever put on a uniform," coach Jack Del Rio said. "He's a great Raider. To be able to send him out the right way, to be able to cap off a special evening like this, our last home game of the year ... I'm just really proud of the effort."
The Chargers (4-11) were unable to muster a first down and lost their seventh straight division game. Rivers threw for 277 yards and a TD for San Diego, also possibly on the move to the Los Angeles area.
"It's been the story of the year, just losing close games," Rivers said. "Doesn't make it any easier losing another one like that."
Carr hit Crabtree on the next play for the go-ahead touchdown with 4:42 to go. Carr added a 2-point conversion to Roberts to make it 20-17.
It was a night of goodbyes as Woodson played his final home game with the Raiders after announcing his retirement earlier in the week. Woodson got a loud ovation as he was introduced last with the defensive starters and was the only Oakland captain for the pregame coin toss.
While Woodson's future is determined, the team's remains in flux. Raiders owner Mark Davis and Chargers owner Dean Spanos are seeking to partner on building a stadium in Carson. The Rams are looking to build their own stadium in Inglewood as well and the league will likely decide in January which teams -- if any -- will be allowed to move.
Some fans came with "Stay in Oakland" signs in hopes that the team does not leave the Bay Area for the second time. The Raiders moved from Oakland to Los Angeles following the 1981 season and then returned in 1995.
The sloppy play continued in the fourth quarter when San Diego was called for unsportsmanlike conduct after an incomplete pass on third down. That backed the Chargers to the 35 but Lambo made a 53-yard field goal.
Oakland's Khalil Mack was called for holding on the play and Chargers coach Mike McCoy opted to take the penalty instead of the three points. That seemed to pay off when Rivers appeared to hit Ladarius Green for a 30-yard touchdown pass on the next play. But the catch was wiped out on replay review and Lambo eventually missed a 48-yard field goal, keeping the Chargers lead at 17-12.
Copyright 2015 by The Associated Press