(Betting Express) - With their apparent invincibility thrown out the window, the Oakland Raiders will try to regain the top spot in the AFC West on Sunday when they face the surprising first-place San Diego Chargers at the Coliseum.

Oakland appeared to be unbeatable in the first four games of the season, but suddenly came apart against the lowly St. Louis Rams last week. The Raiders got caught looking past the downtrodden Rams and paid for it in the form of a 28-13 loss. Bill Callahan's club went from being in complete control of the West division to dropping a half game behind the Chargers for first place. The Raiders aren't losing their confidence because of just one loss, though.

"I still believe in my heart we're a good team," Lincoln Kennedy said. "We just didn't play like it. You don't push the panic button. We still have confidence in what we do."

The Raiders continue to have trouble with mental mistakes, as they were flagged 14 times for 107 yards in their loss to St. Louis. Callahan understands that he has to tighten the reins on his team.

"That's important to me because that's a reflection of me, and I'm accountable for that area," said Callahan. "It's reflective of the discipline on our team, and it's been addressed. Even as we've won, we've addressed it, and we continue to address it."

The Raiders had little trouble moving the ball against the Rams, racking up 367 yards of total offense, but turnovers hurt them badly. Gannon was picked off two times and fumbled once. Still, the 36-year-old completed 30-of-45 passes for 332 yards and a touchdown.

"I felt like the momentum was starting to swing back in the third quarter," Gannon said. "We had the ball quite a bit...It wasn't like we couldn't move the ball. We moved the ball, and at times we shot ourselves in the foot."

Callahan's squad still leads the NFL in total offense (442.6 ypg) and passing (320 ypg). Gannon recorded his fourth straight 300-yard passing game last Sunday. Only three players have recorded more consecutive 300-yard passing games - Steve Young, 1998 and Kurt Warner, 2000 with six and Joe Montana, 1982 with five.

It helps that he has a variety of talented receivers, including Jerry Rice, Tim Brown and talented youngster Jerry Porter. Rice erupted against the Rams, hauling in seven passes for 133 yards. The ageless wonder recorded his second 100-yard receiving game of 2002 and 70th of his career.

San Diego better focus on stopping Rice this week because he has made a living out of burning the Bolts in the past. Rice has posted 54 catches for 879 yards (125.6 ypg) and 13 touchdowns against the Chargers in his career. He has put together five 100-yard receiving efforts versus San Diego.

COMING UP: The Raiders have another important West contest next week when Kansas City comes to town.