For the last five minutes, Philip Rivers and rookies Branden Oliver and Jason Verrett were brilliant for the streaking San Diego Chargers.

Not so much the first 55 minutes on Sunday, when the Chargers stumbled around before winning 31-28 at Oakland to improve to 5-1, tied with Philadelphia and Dallas for the NFL's best record.

The Chargers have won five straight. The last three were against teams with a combined 1-16 record and starting either rookie or second-year quarterbacks.

The competition gets tougher Sunday when the Chargers host the Kansas City Chiefs, who are coming off their bye.

Wide receiver Malcom Floyd says the winless Raiders showed some schemes the Chargers weren't expecting and started fast.

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