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Lorraine McKenna
BBC Sport Journalist

Hello again, folks. Who will take pole position for tomorrow's Mexico City Grand Prix, the second of this Americas triple-header?

We're at high altitude at the Autodromo Hermanos Rodriguez and so far, Ferrari's Charles Leclerc has been quickest in two practice sessions, with Lando Norris finishing top in the final hour earlier on.

It was close between the top teams in third practice, so this should be an intriguing fight for pole position.

Championship leader Kimi Antonelli is looking strong on the weekend he can become the new world champion with races remaining, while over at Haas, Esteban Ocon is nowhere to be seen, as the Frenchman has been replaced by Japanese reserve driver Ryo Hirakawa for the rest of the Mexican track action.

Andrew Benson
BBC F1 correspondent

McLaren’s Lando Norris pipped Mercedes driver Kimi Antonelli to the fastest time in final practice on the weekend on which the world title is poised to change hands from the Briton to the Italian.

Norris pipped Antonelli by just 0.001 seconds at the end of the last session before qualifying as both moved ahead of Ferrari’s Charles Leclerc, who was fastest on Friday but 0.117secs off on Saturday.

Antonelli will become champion on Sunday as long as he does not lose more than 23 points to team-mate George Russell or 24 to Ferrari’s Lewis Hamilton. The only way Antonelli can be prevented from winning the title is if Russell wins and he finishes lower than ninth, or Hamilton does and he is out of the points.

McLaren’s Oscar Piastri was fourth fastest, 0.195secs off the pace, with Red Bull’s Max Verstappen 0.351secs behind Norris in fifth and ahead of Hamilton.

Russell and Red Bull’s Isack Hadjar brought up the rear of the drivers from the top four teams, with Racing Bulls’ Liam Lawson and Arvid Lindblad completing the top 10.

News before practice was that Esteban Ocon has been dropped from his Haas seat for the rest of the weekend and replaced by reserve driver Roy Hirokawa. The Japanese was 19th in final practice, fourth places and 0.577secs behind team-mate Oliver Bearman.

At the back, neither Audi’s Gabriel Bortoleto or Cadillac’s Sergio Perez set a time as they suffered engine problems that required a power-unit change.

Both Max Verstappen and Liam Lawson will be dropping one place on the grid for Sunday's race after the pair were penalised for a collision during yesterday's practice session.

The two drivers made contact into Turn 13 in the stadium section after running wheel to wheel through a few corners.

Straight after the incident, Lawson came on the Racing Bulls radio to say the Red Bull man drove into him", adding: "He literally just drove into me, every weekend."

The stewards report said that four-time world champion Verstappen was preparing for a flying lap and Lawson on a slow lap after a timed lap "preparing for another push lap".

It added: "The drivers of both cars behaved in a manner that was considered unacceptable by the stewards."