SAN DIEGO (AP) -- After having their playoff hopes ended by the Buffalo Bills, the Oakland Raiders had the rest of their Sunday wrecked by the San Diego Chargers.

Oakland's seesaw season took another big dip, starting early in the first quarter when the public-address announcer gleefully announced Buffalo had beaten New England in overtime. That officially sealed Oakland's sixth straight year out of the playoffs.

	Chargers receiver Jeff Graham beats Oakland's Eric Allen in the fourth quarter for a game-tying 10-yard TD. Graham had three catches for 113 yards.

Then the Chargers scored 10 points in the fourth quarter to beat the Raiders 23-20, with the winning points coming on John Carney's 37-yard field goal with 8:09 remaining. Carney finished with three field goals and pushed his career total to 1,001 points, and Jim Harbaugh threw two touchdown passes.

"It was a difficult loss for our team," Raiders coach Jon Gruden said. "You hoped that we could remain alive as long as possible."

The loss came just a week after the Raiders routed Tampa Bay 45-0.

The Chargers, eliminated from the playoffs a week earlier, were only too happy to beat their despised rivals, snapping a four-game losing streak to the Raiders (7-8) and disappointing thousands of fans wearing silver and black.

"To get up for a game late in the season with really nothing to play for, and to perform well, is great," linebacker Junior Seau said. "It was probably one of our better performances this year."

Seau, still bothered by a pulled stomach muscle, added his personal touch with an interception and a 16-yard return late in the first half, running wildly and acting a few times like he was going to lateral.

"Whenever I get a return against the Raiders, it's not going to be a normal return," said Seau, snubbed in last week's Pro Bowl voting. "There will be some so-called showboating or whatever. We're going to have fun with it."

That set up the second of Carney's three field goals, from 19 yards, for a 13-10 halftime lead.

The Chargers (7-8) overcame some big gaffes to win, including an interception and a botched fake field goal in the second quarter.

"What a sad thing that was," coach Mike Riley said of the fake field goal, which was supposed to be a pass from Carney to tight end Freddie Jones. Due to a miscommunication, deep snapper David Binn thought the fake was off, and ended up snapping the ball past Carney.

"It would have been a terrible thing to waste a day like this," Riley said. "We have a chance to go 8-8. We have our own little goals."

The Chargers' tying touchdown early in the fourth quarter came in part due to confusion among the Raiders. On a first down from the Raiders 49, running back Kenny Bynum fumbled and center Roman Fortin recovered for an 8-yard loss.

At the tail end of the play, Chargers tackle Vaughn Parker grabbed Darrell Russell from behind and attempted to throw him to the ground. The call was for holding, but Gruden thought it was a personal foul. One of his players accepted the holding penalty, so it remained first down.

"I just don't think we had all the information at that time," Gruden said.

Three plays later, with the Chargers facing third-and-15 and trailing 20-13, Jeff Graham outjumped Anthony Newman to catch a 49-yard pass from Harbaugh. On the next play, Graham caught a 10-yard touchdown pass to tie the game at 20.

GAME NOTES

Raiders defensive end Lance Johnstone had three sacks for 29 yards in losses, giving him 10 this season. All three came after Chargers left tackle John Jackson was knocked out with a strained back. Jeff Graham's TD catch was the first for a Chargers wide receiver in 27 quarters. The last one had been by Charlie Jones against Denver on Nov. 7. Graham had his third 100-yard receiving game of the season and 21st of his career. The Chargers had five fumbles, but didn't lost any. Fortin recovered three.

After Carney put the Chargers ahead, the Raiders drove to the Chargers 27-yard line, only to watch Joe Nedney push a 44-yard field goal attempt wide left with 3:04 to play.

Harbaugh completed 23 of 36 passes for 325 yards. Graham had three catches for 113 yards. Oakland's Tim Brown had three catches for 109 yards, while Raiders quarterback Rich Gannon was 16-of-33 for 266 yards.

Just like they did in the first quarter, the Raiders scored on their first two possessions of the third quarter to take a 20-13 lead. Gannon threw a 7-yard touchdown pass to Rickey Dudley and Nedney kicked a 25-yard field goal.

The Raiders scored on their first two possessions of the game. Nedney kicked a 52-yard field goal on a drive kept alive by a roughing-the-passer call against tackle John Parrella.

Then Anthony Newman intercepted Harbaugh. Brown had a 43-yard catch-and-run to the 1, dragging cornerback Charles Dimry about 10 yards, and Zack Crockett finished the drive.

San Diego tied it on Carney's 48-yard field goal and Harbaugh's 18-yard pass to fullback Fred McCrary, San Diego's first touchdown in nine quarters.