Harrison, who had racked up a record 286 yards rushing against Kansas City a week earlier, finished with 148 yards on 39 carries against the Raiders.
Dawson's kicks were from 42, 33 and 34 yards.
Anderson completed 8-of-17 passes for 121 yards.
Sebastian Janikowski kicked three field goals, including a 61-yarder, for Oakland (5-10).
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