Three of Kaeding's boots came as the result of poor snaps by backup Oakland long-snapper Travis Goethel, who was filling in after first-stringer Jon Condo left the game in the first half with a head injury.
Two of Goethel's snaps bounced off the infield dirt used by baseball's Oakland Athletics and a third resulted in a blocked punt -- the first allowed by the Raiders in six years.
Philip Rivers compiled 231 aerial yards, going 24-of-33 with a touchdown for San Diego (1-0).
Malcolm Floyd led the Chargers' receiver corps with four catches for 66 yards and a score.
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