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Since the current 12-team playoff format began in 1990, 16 of the 32 No. 1 seeds have made it to the Super Bowl, with eight winning. And before you get the dander up about a No. 1 seed being an underdog to a No. 3, last season the Seahawks, a No. 1, were a 3 1/2-point underdog to the sixth-seeded Steelers (who won).