If you haven't already, have a read of Lewis Hamilton's latest BBC Sport column. In it, he talks about his winning start, why equalising F1 engines would be unfair, Fernando Alonso's return and Jeremy Clarkson.

Here's a little taster: "At the beginning of the 21st century, Ferrari were dominating and won five championships in a row. They were not equalised with everyone else - the others had to catch up, which they eventually did. And the same goes for Red Bull at the beginning of this decade.

"Now it's our turn."

In case you are just joining us for FP2, here is a brief summary of what happened in FP1:

• Nico Rosberg finished fastest

• Ferrari's Kimi Raikkonen and Sebastian Vettel second and third respectively

• Fernando Alonso makes his first grand prix appearance of 2015

• Both Manor cars get out on circuit.

For a more detailed review of first practice, have a read of Andrew Benson's report.

Lewis Hamilton certainly does not look as though he is anticipating some track time any time soon. He's just been strolling through the paddock in shorts and a Mercedes t-shirt.

Andrew Benson
Chief F1 writer in Sepang

"Don't expect to see Lewis Hamilton out in the early stages of the second session. The world champion stopped on track before setting a time in the first session and investigations have revealed his engine had a problem with the inlet system.

"The part can be changed without affecting his allocation of four engines for the season, but it means Hamilton will be on the back foot for the rest of this weekend, having missed out on a lot of track time. Mercedes say they hope to get him out on track before the end of the second session."

Hello! Welcome to coverage of second practice for the Malaysian Grand Prix.

After sailing through the practice sessions and on to victory at the season-opening Australian Grand Prix, Lewis Hamilton was in the unfamiliar position of having to watch his mechanics working furiously on his Mercedes as he sat out the vast majority of first practice.

Hamilton had come to a stop early on because of an engine problem, will he make it out for FP2?

Image source, Getty Images

It was a tale of contrasting fortunes in first practice for the Malaysian Grand Prix as Nico Rosberg finished fastest while his team-mate Lewis Hamilton watched on from the team's garage, his car struck by an engine problem.

No-one else looks capable of challenging the might of the Mercedes in 2015, so could the only team that can stop be them be themselves?

OK then, no doubt most of you have sloped off under the covers for a bit of shut eye so it is time for us to put the brakes on our coverage for the time being. Join us again though at 05:30 GMT for build up to second practice. See you then.

A contrast to Nico Rosberg, though, who will be looking to bite back this weekend after Lewis Hamilton won the season opener.

Also good to see a solid 90 minutes for Manor as they got 16 laps under their belt in their first practice session this year.

So unfamiliar territory for Lewis Hamilton as he not only fails to finish inside the top two in first practice for the first time since China last year, but also fails to post a timed lap after an engine problem cut short his session.

Mercedes have just over two hours to get the issues ironed out for FP2.

1) Rosberg 2) Raikkonen 3) Vettel 4) Grosjean 5) Sainz 6) Ricciardo 7) Verstappen 8) Bottas 9) Kvyat 10) Ericsson 11) Massa 12) Maldonado 13) Marciello 14) Alonso 15) Hulkenberg 16) Perez 17) Button 18) Stevens 19) Merhi

No time: Hamilton

NICO ROSBERG FINISHES FASTEST IN FIRST PRACTICE FOR THE MALAYSIAN GRAND PRIX

Kimi Raikkonen improves as the timer hits zero, moving to within three tenths of Nico Rosberg, but its not going to be enough to deny the Mercedes finishing fastest....

An unusual issue for Felipe Massa as he reports his "drinks tube" is digging into his back. Another seating issue for Williams, it would seem, after Valtteri Bottas hurt his back in Australia.

The sound of engines fills the air in Sepang with 13 cars out on the circuit with just over three minutes left of this session.

Pastor Maldonado has moment at Turn One - not the first driver to do so - as he locks up and runs wide. He currently has the 12th fastest time.

Image source, Williams

Williams: And off we go! Final runs this morning with the heat still rising - currently 33C air & 44C track.

That's not good news for Lewis Hamilton then as Mercedes confirm it was an engine problem that ended his session early.

First practice will also finish with Hamilton as the only driver not to clock a timed a effort as Roberto Merhi sticks his name on the board with a 1:47.683 - 19th fastest.

Andrew Benson
Chief F1 writer in Sepang

"The battle for best of the rest behind Mercedes was an intensely close one between Williams and Ferrari last time out in Australia and Felipe Massa said he expected it to be the same this weekend - and for the rest of the season.

"Ferrari have clearly made a step forward relative to their immediate rivals, if not perhaps Mercedes, and Massa puts this down to them 'improving massively on the engine', which he says is now the equal of the Mercedes.

"Massa believes having Valtteri Bottas back from injury will help the team in their quest to beat Ferrari on track."

Kimi Raikkonen is up to second fastest with a 1:41.016, 0.892s off Nico Rosberg's benchmark, knocking his Ferrari team-mate Sebastian Vettel down to third.

Ferrari, along with Williams, are battling to be the "best of the rest" behind the seemingly unstoppable Mercedes.