Hamilton defends himself after Rosberg accuses him of deliberately slowing him down
Briton says: "I'm not really quite sure what his problem is"
Hamilton wins, Rosberg 2nd, Vettel 3rd, Raikkonen 4th, Massa 5th
Button and Maldonado crash after battling for position
Bottas 6th, Grosjean 7th, Nasr 8th, Ricciardo 9th, Ericsson 10th
Hulkenberg, Kvyat, Maldonado, Verstappen out
Impressive from Hamilton.
He upped his pace when he had to at the end of his second stint and comes in at the end of lap 33 to put on new boots.
A 2.5sec stop is completed and he's out again, some six seconds ahead of Rosberg.
Image source, EPAThe McLarens are still running after half distance, which is something of an achievement. Button (pictured) is 15th, with Alonso in 13th.
Kimi Raikkonen's engineer: "The plan is to go longer on this tyre and have a shorter stint at the end."
Image source, AFPRosberg has been losing time in the past few laps to Hamilton and pits four seconds behind Hamilton.
He's out on the medium and will hope for an undercut, but has the damage been done?
Rosberg comes out around two seconds ahead of Vettel.
Peter Wanyonyi: Lewis Hamilton managing his own tyres while simultaneously destroying Nico and Vettel's. Genius.
Rob: Hamilton playing games, has plenty of lap time in hand, same from first stint can pull a 4 sec gap before first pit stop when needed.
Clare_Star: Ha ha ha! "Lewis if you don't play nicely Papa Toto will turn off your engine and send you to bed" #bbcf1 radio message of the day so far.
As earlier, Vettel is the first of the leading cars to come in, at the end of lap 30.
He's on the medium tyre and needs to push now because these stops could be crucial to who wins this race.
Image source, EPANico Rosberg: "My front left is becoming a problem."
Jennie Gow
BBC Radio 5 live pit-lane reporter
"Lewis Hamilton has been told to increase his speed - he's been put on the naughty step. They have said if he doesn't they will pit Nico Rosberg first."
Image source, AFPAfter several laps of trying, Ricciardo is past Ericsson and into 11th.
Ferrari engineer: "Can you go faster than this, Seb?
Vettel: "Not much, I am on the limit."
Image source, AFPForce India driver Nico Hulkenberg on his retirement: "I'm not sure what happened to the car. I just lost drive and had to park the car. It was an unpleasant experience.
"It is what it is. I felt OK, not mega not great. I was surprised I could keep up with the Toro Rosso and Lotus at the start. It's disappointing."
Hulkenberg is one of two retirements so far, Daniil Kvyat of Red Bull the other.
Image source, EPAThe Red Bull of Ricciardo and the Sauber of Ericsson remain locked in a good scrap for 11th place. They've come close a few times but the Swede is just about hanging on - for now.
Who would have thought at the end of last season that Red Bull would find themselves duelling with Sauber in 2015 - a team that scored no points last year don't forget.
We just saw a very slow moving Toro Rosso piloted by Carlos Sainz.
The rookie looked to be on his way back to the pits to retire, but a few button presses on the steering wheel seems to reset the system and he's back up to pace again.
Fernando Alonso's race engineer: "Fernando, we're not sure the fuel dash is working properly."
Image source, EPA
Ben Edwards
BBC F1 commentator
"I think Lewis Hamilton is in control here. He is managing the situation but he is certainly not driving into the distance like he did 12 months ago."
Image source, EPATo Rosberg: "Left front most worn, rears in good condition."
Sophie Taylor: Red Bull Racing are doing a great job at showing us all why you should never, ever buy a Renault
Stewart: Don't blame Renault. Blame Red Bull wanting the engine at unworkable angles.
David Coulthard on Verstappen overtaking Nasr
BBC F1 co-commentator
"It was beautiful. He is using his DRS and calmly adjusting his steering wheel. This young man certainly has race craft."