Valtteri Bottas in his car at the 2018 United States Grand Prix.

Valtteri Bottas could be the difference between Hamilton winning the title this weekend and Vettel taking it one more round.

Daniel Ricciardo post-qualifying at the 2018 United States Grand Prix.

But the Australian expects he could keep Vettel behind him in the race nonetheless.

Lewis Hamilton on track during qualifying for the 2018 United States Grand Prix.

Lewis Hamilton claimed a tightly contested pole from Sebastian Vettel on what’s shaping up to be a title-deciding weekend.

Sebastian Vettel on track during practice at the 2018 United States Grand Prix.

Sebastian Vettel will drop three places on the USA grid after speeding under red flags.

Lewis Hamilton on track at the 2018 United States Grand Prix.

Hamilton was quickest, Vettel picked up a three-place grid penalty for speeding under red flags.

Sebastian Vettel in his garage at the 2018 Japanese Grand Prix.

Sebastian Vettel has concede Ferrari just hasn’t been good enough to beat Mercedes.

Lewis Hamilton sits by his car after winning the 2018 Japanese Grand Prix.

Lewis Hamilton can make himself a five-time world champion in Austin this weekend.

Brendon Hartley at the 2018 United States Grand Prix.

Brendon Hartley says the speculation over his F1 future has made him stronger.

Lewis Hamilton and Fernando Alonso in the pre-race United States Grand Prix press conference.

Fernando Alonso has ranked Lewis Hamilton among F1’s all-time greats — and above himself.