


The title permutations:
If Hamilton wins in Austin, Vettel must finish second to take the title fight on to the Mexican GP
If Hamilton finishes second, Vettel must finish fourth
If Hamilton finishes third, Vettel must finish sixth
If Hamilton finishes fourth, Vettel must finish seventh
If Hamilton finishes fifth, Vettel must finish eighth
If Hamilton finishes sixth, Vettel must finish 10th
If Hamilton finishes seventh or lower, the title race goes on to Mexico








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