So Sebastian Vettel ends the day quickest with Lewis Hamilton all the way down in eighth. A one-off? Or problems afoot at Mercedes for this weekend? Luckily for them they have an extra day to get to the bottom of it.

We're back on Saturday for final practice at 09:30 BST. See you then.

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Valtteri Bottas: "Our changes between FP1 and FP2 went in the wrong direction. We hope gap to Ferrari isn't real."

Lewis Hamilton, speaking to Sky Sports: "We were good in P1. Something went wrong in this session, we just have to found out why.

"The tyres were not working for whatever reason this afternoon."

Worried for Mercedes for qualifying? Or fancy them to pull it out of the bag when it matters? Predict your top three for qualifying here.

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Mercedes. Making mistakes? Surely not.

So why were Lewis Hamilton and Valtteri Bottas so low down on the timing sheet? Toto Wolff is on Sky Sports now saying they just got their set up wrong for the day.

"We are lacking data so now it is about sticking heads together and staying calm," he says.

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Fernando Alonso has got tongues wagging all across America.

Former Red Bull chief mechanic Kenny Handkammer was one of the most successful engineers in F1 racing after being part of 13 world championship title wins. He now works for Tesla and resides in California.

"The hype it has got is huge, it is outstanding," he says. "Everyone is talking about it. I take my son to play football at the weekend and all the dads are saying: 'Did you see Fernando? He has got up to speed really quickly'.

"I am getting that just from people I know without the rest of the media attention."

Allan McNish
BBC Radio 5 live Formula 1 analyst

Ferrari have genuine pace. I do suspect that Lewis Hamilton and Valtteri Bottas will turn it up when they need to. FP3 will be a better indicator of what we can expect in qualifying.

1) Vettel 2) Ricciardo 3) Raikkonen 4) Kvyat 5) Sainz 6) Verstappen 7) Perez 8) Hamilton 9) Magnussen 10) Bottas

11) Vandoorne 12) Button 13) Massa 14) Grosjean 15) Ocon 16) Stroll 17) Hulkenberg 18) Palmer 19) Ericsson 20) Wehrlein

Lewis Hamilton and Jenson Button run side by side down to the chicane. That might have been the moment that irked Button.

Thirty seconds left. Sebastian Vettel is going to finish the session fastest.

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Jennie Gow
BBC Radio 5 live pit-lane reporter

Lewis Hamilton has just come in and whacked his marker board. They didn't change his tyres, they have just sent him back out again.

Sam Marsh: They should livestreaming Jenson's cockpit and team radio. These updates are highly amusing

"People still drive like BEEP! Some things don't change," complains Jenson Button.

Welcome back, Jenson!

Spanners Ready: "How do I turn off the DRS beep?" Just like we showed everyone in the Bahrain test mate..

Button perhaps regretting that decision to skip the Bahrain test...

Andrew Benson
Chief F1 writer in Monaco

It's difficult to read but what we can say is that Vettel's first lap on the ultra-soft was about two tenths quicker than Hamilton. Bottas' first lap on the ultra-soft was about the same as Vettel's so not a massive concern for Mercedes.

Hmm. It's a short stint out on the track for Lewis Hamilton and Valtteri Bottas. A couple of laps and they are back in. Not sure what their programme is today.

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Jenson Button is doing a solid job driving that McLaren at the moment but is clearly still getting up to speed with things inside the cockpit.

"How do I turn off the DRS beeps?" he asks.

Kimi Raikkonen is lapping in the 1:15s on the super-softs as the two Mercedes emerge onto the track once again.

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