Vettel fastest in second practice, Hamilton top in first session
Final practice at 16:00 BST; qualifying at 19:00
Rosberg can win the title this weekend
Image source, Getty ImagesSo who will be happiest in Mexico this time tomorrow?
There wasn't much to take from today's practice sessions but you get the feeling tomorrow will be a whole different ballgame.
Join us for third practice tomorrow at 15:30 BST. See you then.
Andrew Benson
Chief F1 writer
If Ferrari are in the mix at the front on Sunday, it would be unexpected after a difficult season for the Italian team, but it could play into Hamilton's hands.
Because Rosberg has such an advantage, Hamilton ideally needs him to finish below the podium positions. If Hamilton won with Rosberg lower than third, the Briton would be able to control the championship - two wins in the final two races would be enough, even without any further problems for the other Mercedes.
When was the last time Ferrari were quickest on a Friday? Feels like a long, long time ago. I'd love to get my hopes up for a challenge tomorrow, but you just know Mercedes have more in hand. How much more is the question, though.
Tom Clarkson
BBC Radio 5 live commentator
Let's hope it bodes well for Ferrari. They are still developing their car and there are lots of reasons why we want to see them up at the front as long as it doesn't hamper their development for next season.
12) Button 13) Massa 14) Magnussen 15) Perez 16) Palmer 17) Wehrlein 18) Ericsson 19) Nasr 20) Grosjean 21) Ocon 22) Gutierrez
1) Vettel 2) Hamilton 3) Rosberg 4) Raikkonen 5) Ricciardo 6) Hulkenberg 7) Verstappen 8) Bottas 9) Sainz 10) Alonso 11) Kvyat
Just as the flag falls, Daniil Kvyat grinds to a halt at the entrance to the pitlane. "I lost power," he says.
Image source, AFP / Getty Images
Sebastian Vettel finishes quickest in second practice for the Mexican Grand Prix.
Image source, AFP / Getty ImagesTom Clarkson
BBC Radio 5 live commentator
What the drivers haven't done is their long runs on the same compound of tyre at the same time. That is what I think Pirelli were alluding to when they suggested it was inconclusive.
Image source, F1.comKimi Raikkonen finally gets what he wants as he does a practice start at the end of the pit lane.
Three minutes left of the session.
Into the final eight minutes and Lewis Hamilton and Nico Rosberg are lapping on different compounds. Hamilton has softs on while Rosberg is on mediums.