Got a TV Licence?

You need one to watch live TV on any channel or device, and BBC programmes on iPlayer. It’s the law.

Find out more
I don’t have a TV Licence.

Summary

  1. Hamilton fastest in second practice, Rosberg 2nd
  2. Lotus' Maldonado and Grosjean spin
  3. Hamilton fastest in first practice, Rosberg 2nd
  4. Marussia & Caterham not in Austin
  5. Bianchi still 'critical but stable'

Live Reporting

By Lawrence Barretto

All times stated are UK

Get involved

Lewis Hamilton
Getty Images

A look at the timesheets from both practice sessions would suggest Lewis Hamilton

has had a great day. And until the last 18 minutes of FP2 he had. But then the mechanical gremlins came calling.

How much of an impact will it have on the rest of his weekend? Join me tomorrow from 14:30 BST tomorrow to find out. Until then, it's goodnight and Happy Halloween from me.

Get involved #bbcf1

Joanna Harran: Would love Fernando to have a decent race result to end the season. Has pushed that car all year, deserves at least a podium.

Mercedes' Lewis Hamilton tells BBC F1 pit lane reporter Jennie Gow that it was not a gearbox issue - it's a fuel leak problem but the team still need to do more investigating.

That's all the track action for today. We'll have all the latest news from the Austin paddock on the F1 pages or via @bbcf1.

There'll be video highlights of that second session, too, along with the best driver interviews. You'll be spoilt for choice.

Final practice starts at 15:00 GMT with qualifying following at 18:00.

Formula 1
Getty Images

Second practice results

1) Hamilton 2) Rosberg 3) Alonso 4) Ricciardo 5) Massa 6) Raikkonen

7) Kvyat 8) Magnussen 9) Button 10) Hulkenberg 11) Bottas 12) Grosjean

13) Vergne 14) Perez 15) Maldonado 16) Sutil 17) Gutierrez 18) Vettel

The cars are just cruising around the track as part of the "virtual safety car" test as mentioned earlier. You can read more about it

here.

That's the 14th time in 17 races this season that Lewis Hamilton has finished on top of the pile in second practice. Unfortunately, the shine was taken off the achievement as he missed the final 18 minutes of the session, and vital long-run time, with an as-yet-unidentified unidentified car problem.

Chequered flag

us gp
Getty Images

Lewis Hamilton finishes fastest in second practice for the United States Grand Prix.

Sebastian Vettel has managed to get out for the final few minutes and has now upped his lap count to 16. That's still well down on Valtteri Bottas, Kevin Magnussen and Pastor Maldonado who have all done 35.

Jenson Button has finished this session in the top nine at every race this season. That run looks set to continue as the McLaren driver, who has yet to sign a contract for next season, is currently ninth, a few thousandths behind team-mate Kevin Magnussen in eighth.

Everyone is out on track apart from Lewis Hamilton, Nico Hulkenberg and Sebastian Vettel. Nico Rosberg is a ticking along nicely on his long run - it's certainly the German who has had the better fortune of the two Mercedes title rivals today.

us gp
EPA

Lewis Hamilton is out of the car and his car is up on the stands. Will the Mercedes driver get out again in this session? Just 18 minutes remaining and for every second he's in the garage, the Briton is losing valuable long run data gathering time.

Text us on 81111

Ben Weaver: Will Sunday's race be a repeat of Bahrain? I hope not. My heart won't be up to it!!

us gp
Getty Images

Oh dear. Lewis Hamilton is called into the pits. "We've got an issue with the car," comes the ominous message.

F1
BBC

BBC Radio 5 live's Jennie Gow: Is this Hamilton Hill or Vettel Verge or have you got a better suggestion?

How about Raikkonen Ridge?

Dr Helmut Marko and Sebastian Vettel
Getty Images

Where is Sebastian Vettel? He's in the garage watching this session. The German has only completed 13 laps and has the 18th fastest time.

So there's gearbox concerns for both Mercedes drivers, with just under 25 minutes remaining. Lewis Hamilton and Nico Rosberg have decided to stay out, though, as not to disrupt their long run.

Team radio

Lewis Hamilon: "Noticed there's a strange shift coming across the finish line. Fourth [gear] to fifth."

It looks like the attention has turned to long runs, in preparation for Sunday's race. That means the standings are unlikely to change, with Lewis Hamilton top, ahead of Nico Rosberg, Fernando Alonso, Daniel Ricciardo and Felipe Massa.

Text us on 81111

Paul in Canterbury: Am I the only person to think it's already been decided there will be three car teams next year? Would explain Alonso's cryptic messages - Hamilton/Rosberg/Alonso at Mercedes anyone?!

Team radio

Mercedes' Nico Rosberg: "Problem with the gearbox on the downshift."

Lotus F1 on Twitter: Rumours that Pastor had a spin are completely unfounded and totally untrue...well... Maybe there's some truth to it.

Only the Mercedes have managed to get into the 1m39s. Here's how they stand with just over 30 minutes remaining.

1) Ham 2) Ros 3) Alo 4) Ric 5) Mas 6) Rai 7) Kvy 8) Mag 9) But 10) Hul 11) Bot 12) Gro 13) Ver 14) Per 15) Mal 16) Sut 17) Gut 18) Vet

usgp
Getty Images

Fernando Alonso goes third quickest on his soft tyre run with a 1:40.189, 1.1 seconds off the pace. Daniel Ricciardo is one tenth further adrift in fourth.

Andrew Benson

Chief F1 writer

"At the end the session, as was the case after first practice, the teams will trial a new system aimed at removing the possibility of a repeat of Jules Bianchi's awful accident in Japan. The 'virtual safety car' is an extension of the system used when a safety car is deployed but has not yet found the leader. All drivers will have a 'delta' time displayed on their dashboard - which will be about 35% of a dry lap time - and they have to stay 'positive' to it, i.e. slower. The results will be analysed afterwards before governing body the FIA and the teams decide how to proceed with it."

Red Bull
Getty Images

And it doesn't look like that is about to change in Austin...

Pastor Maldonado spins, not for the first time today, down at Turn 19. The Venezuelan lost the rear of the car mid-corner. Meanwhile, Romain Grosjean reports that he lost Kers at the end of the last lap. Problem after problem after problem.

Second time around, Lewis Hamilton manages to get something more from those soft tyres to go quickest by 0.003 seconds. His team-mate Nico Rosberg, meanwhile, chose to pit. As it has been all season, it's just so close between the pair.

Lewis Hamilton
Getty Images

Lewis Hamilton is just 0.009 seconds up on team-mate Nico Rosberg on his soft tyre run after two sectors, but he loses time in the final sector and slots into second, 0.053 seconds off the pace.

Nico Rosberg bolts on the soft tyres and heads out for his qualifying-simulation run. It's a stunner, the German clocking a 1:39.088 to improve on his previous best by nine tenths of a second.

Sebastian Vettel makes an appearance at last. The four-time world champion's first effort is nothing to shout about, though, as he slots into 18th - and last - with a 1:44.588.

Kimi Raikkonen and Fernando Alonso
Getty Images

Kimi Raikkonen and Fernando Alonso got a taste of the future when they got behind the wheel of two concept cars, created by students who had to make the most of aerodynamics and materials so as to reduce the impact on the environment, ahead of this weekend. They probably had a lot more fun driving those than this year's Ferrari which has been very, very disappointing.

Jenson Button of McLaren
Getty Images

McLaren are continuing their upward curve of form with another strong performance so far this weekend in Austin. Kevin Magnussen is third quickest, one second adrift of Hamilton, with Jenson Button a few thousandths back in fourth.

Get involved #bbcf1

Jayne: Austin track looks so wide, double decker bus races wide not F1!!

Nico Rosberg wrestles P1 off his Mercedes team-mate Lewis Hamilton, his lap of 1:40.078 is 0.537 seconds quicker.

Mercedes
Mercedes/Twitter

Mercedes on Twitter: Lewis Hamilton comes over all psychedelic - it's a slick look too

Here's how they stand with 68 minutes remaining:

1) Ros 2) Ham 3) Mag 4) Alo 5) Ver 6) But 7) Ric 8) Kvy 9) Mas 10) Gut 11) Hul 12) Bot 13) Per 14) Sut 15) Rai 16) Gro 17) Mal 18) Vet

Everyone has been out and set a time apart from Sebastian Vettel, who is going nowhere fast. The four-time world champion is pacing around the garage, arms folded, while his team change the gearbox on his Red Bull.

Lotus
Lotus/Twitter

Lotus F1 on Twitter: Well it was only a matter of time until Romain came back in, he wants to say hi to Matt LeBlanc too!

The Friends star is watching this session from the Lotus garage.