Hello and welcome to live text commentary from the Malaysian Grand Prix - where it's been raining...

Massa and Grosjean the next in. These two were fighting for seventh - and they stay in the same order, three places down from where they came in.

Webber did 12 laps on the hard tyres - and it remains to be seen whether Vettel can get ahead of his rival with a couple of quick laps here from the front. Webber not into any nasty traffic from the look of things, a couple of seconds down on Button.

Webber pits! So Vettel returns to the lead as the Australian puts on some mediums.

Di Resta now sweeps into 11th, past Ricciardo. The Force India is quick, and he's making up for yesterday's qualifying woes.

Eight seconds between the top four - then a further eight down to Button in fifth.

It could be that managing the tyres could be the difference between a three or a four-stop strategy here. That's the one to watch at the moment. Which would pay off?

Massa is an interesting one to watch - he's down in seventh but there's no Alonso and no team orders. Rarely a better chance to prove himself.

Webber now sets the fastest lap of the race with a 1:43.195 - that's a bit more like it. Still only about 30% through this race.

Raikkonen finally gets past Perez - Grosjean, meanwhile, is five seconds up the road having got ahead earlier and is now closing in on Massa.

A mix of strategies across the grid - some teams conserving tyres, some burning theirs out. Webber looks to just be containing, but the Mercedes duo are quick.

Button has pulled away just enough from Hulkenberg to keep his place safe, but the action is ahead of him, where Rosberg again goes quickest.

I thought Raikkonen would surge past Perez quick enouhg, but the Finn cannot make a move stick jsut yet. He's having a pretty average race at the moment.

Maldonado, who has complained this season that the Williams is undriveable, has lost his front wing. Looks like he'll be able to get around to the pits to replace it, though.

Button, meanwhile, has been told that McLaren are switching him to Plan B. He'll be realtively pleased with his current position given the team's struggles so far.

Vettel half a second quicker than Webber, Hamilton behind Vettel quicker still, and Rosberg in fourth quickest of all. Searing pace from Mercedes!

Raikkonen the next Lotus to be sweeping forward towards a McLaren. Perez can fend him off at the corners, but won't have a prayer on the long straights.

Quickest man on the track right now though is Hamilton - he takes nine-tenths of a second out of the leading duo. Rosberg has also been told there's no need to conserve tyres.

Lotus, meanwhile, just starting to click - Grosjean passes Perez, Riakkonen sets a fastest lap of the race.

Hulkenberg is doing a terrific job here - all over the back of Button in the race for fifth.

Webber has a three-second cushion - and he's on hard tyres to Vettel's mediums.

'11 laps on this tyre', Hamilton told. That's the medium tyre, and on a track where tyre wear is high, indicative of a three-stopper.