Jennie Gow
BBC Radio 5 live pit-lane reporter

I've just been speaking to Ferrari, the only thing they can report is they can confirm Vettel has massive under steer but they don't know why, or won't tell us why.

1. Bottas
2. Verstappen +1.5
3. Hamilton +3.2
4. Leclerc +7.0
5. Norris +10.6
6. Ricciardo +11.6
7. Vettel +12.6
8. Gasly +14.2
9. Sainz +15.2
10. Magnussen +16.9

At the moment, Lewis Hamilton is going to cruise to this sixth world title.

Andrew Priestley: A stinker of a first lap for Sebastian Vettel.

Chris Lord: It's Sunday! Ferrari’s best day of the weekend!...

Maybe not this Sunday, Chris!

"I must have damage I don't know where from I didn't touch anything but I have understeer like crazy."

Carlos Sainz and Alexander Albon are both under investigation for some opening lap fun and games, with both going well wide.

Both Lando Norris and Daniel Ricciardo have climbed three spots, they're fifth and sixth respectively. Vettel started on the front row, by lap three he is down in seventh, ruining all his hard work from yesterday.

Alexander Albon is in the pits on lap two. He was in the middle of the track, but then got squashed between a Ferrari and Carlos Sainz's McLaren. Right to the back for the Red Bull man.

And another one, Hamilton gets ahead of both Ferraris on lap one. A dream start for him. Fifth to third.

Ferrari started second and fourth, they are already down to fourth and sixth.

Hamilton up to fourth, jumping past Sebastian Vettel.

Albon and Carlos Sainz touch and go wide, Lance Stroll, in a separate incident, also runs well wide.

Bottas gets away well.

Formation lap done, a late scare for Verstappen but his car, just like everybody else's is good to go.

The Red Bull team gathered to mark Max Verstappen's 100th F1 race.

Image source, Getty Images

Lewis Hamilton is down in fifth off the grid. His first task is going to be staying out of trouble on lap one.

1. Bottas
2. Vettel
3. Verstappen
4. Leclerc
5. Hamilton
6. Albon
7. Sainz
8. Norris
9. Ricciardo
10. Gasly
11. Hulkenberg
12. Magnussen
13. Kvyat
14. Stroll
15. Grosjean
16. Giovinazzi
17. Raikkonen
18. Russell
19. Kubica
20. Perez (pitlane start)

Andrew Benson
BBC Sport’s chief F1 writer in Austin

Image source, BBC Sport

The indications are that this will be a one-stop race, especially with the top five all starting on the medium tyre. But the higher temperatures on race day - a maximum of 22C is expected, several degrees warmer than the practice days - could increase tyre degradation and push it towards a two-stop. Another factor are the pronounced bumps, which have been giving drivers headaches - literally. The worst ones are on the entry to Turn One, exit of Turn Nine and through Turn 18.

Turn One is a particular problem, as lock-ups, especially when trying to pass another car, could influence tyre life. A pit stop takes about 20 seconds under green flag conditions, about 14 under a safety car, of which there is a 71% historic probability. Ferrari have saved a set of new softs for each of their drivers and Mercedes a set of new mediums. But if the race runs as expected neither will be needed, because they will likely switch from medium to hard at their only pit stops.

Texas-born Hollywood actor Matthew McConaughey speaking with 5 Live: "The main reason I am here is to support Lewis Hamilton.

"I followed Nascar and became friends with Jeff Gordon. I appreciate the racing, I don't follow it religiously but then when I can meet somebody that is great at a sport and I also respect as an individual, like I do Lewis, that makes it a lot more fun for me to be a part of.

"Formula 1 has got razzmatazz, it's got protocol, a whole lot of circumstance and things leading up to it.

"It's so much more technical than Nascar used to be.

"If you're here you are like 'OK, this is the place to be on the planet right now'."