Lewis Hamilton made another track record and completed a sweep of all three practices when he set fastest lap-time for Mercedes ahead of nearest title rival Sebastian Vettel in third and final practice session for the US Grand Prix.
The Brit made a fastest lap of 1:34.478 at an overcast Circuit of the Americas, the lap was another track record for the Briton, who had set the previous best of 1:34.668 was set in Friday’s second practice.
Hamilton can secure the fourth championship this weekend if he wins and Vettel fails to finish in the top five. The German, 59 points behind in the championship with four races remaining.
The Ferrari man made second fastest, his best lap was 0.092 slower than Hamilton, Valtteri Bottas was third fastest, but two-tenths off the pace, after a wind-dominated session in which he was frequently fighting to retain control of his car.
Kimi Raikkonen was fourth in the second Ferrari ahead of Dutchman Max Verstappen, who on Friday signed a new three-year contract with Red Bull. The Dutchman faces a 15-place grid penalty for Sunday’s race after Red Bull installed new power unit parts in his car.
Williams F1 veteran made sixth quickest ahead of Renault’s Nico Hulkenberg and his new team-mate Carlos Sainz, making his debut with the team after switching from Toro Rosso.
Daniel Ricciardo endured a chaotic morning’s work on his way to ninth in the second Red Bull ahead of Sergio Perez of Force India.