Sebastian Vettel makes his second stop, puts on fresh hard tyres and is back out in second, just ahead of Nico Rosberg.

Reece Young: Don't think Ferrari are as close as the race has led us to believe. Bad strategy calls have punished Mercedes but they may still win.

Andy Moakes: Hamilton should pit now to get the better tyres and close up to Vettel and battle for the win.

Waѕiyullah Budye: This is fascinating stuff from world champion Hamilton as gap down to 15sec! He's beast!

Sergio Perez takes his 10 second penalty while Kimi Raikkonen, after making his second stop, gets the better of Max Verstappen and is up to sixth.

Jenson Button is up to 11th, 2.2 seconds behind Sergio Perez, before Button pits. Meanwhile, the gap between Sebastian Vettel and Lewis Hamilton is down to 14 seconds.

Max Verstappen is back up to sixth, where he started the race. Valtteri Bottas is trying to get beyond him but the 17-year-old is holding his ground well.

A Ferrari leading the way, spins, battles throughout the field and an impressive performance from a teenage rookie. Cracking race!

Adam Craig: Everything is happening in this race! Especially as most of the cars are still going!

Neil Gough: This is actually a great Grand Prix. Never expected it so soon in the season given Australia was only two weeks ago.

Charlie: Ironic that everyone is praising Vettel for breaking the monotony at the front... #howtimeschange

David Coulthard
BBC F1 co-commentator

"It's not a corner that you usually see overtaking. Grosjean was wide on the dirt, relying on Perez lifting out. It was a situation where if you don't get off the usual racing line and give space there will be contact. It was a high-risk strategy."

Penalties are being handed out left, right and centre as Nico Hulkenberg and Sergio Perez are given 10 second penalties for causing collisions.

Romain Grosjean's spin means Jenson Button is up to 13th. Good stuff so far from the McLaren.

Meanwhile, at the front of the pack, Lewis Hamilton has brought Sebastian Vettel's advantage down to 16 seconds. Whatever happens in this race, though, the Ferraris have certainly made Mercedes sit up and take notice.

Ben, Essex: I'd like to think today will finally put to bed that Vettel can only 'do it' in an Adrian Newey car. Come on Seb!

McLaren's Fernando Alonso, who retired on lap 21: "The car went better than expected until the retirement. To be able to run with the pack and even catch the Red Bulls before the pit stops was nice surprise. We had some technical issues which we are investigating but it has been a nice weekend. If we keep this rate up, we will enjoy success very soon."

Romain Grosjean gets tagged by Sergio Perez, sending the Lotus into a cheeky 360 spin. He recovers and gets back on his way in his battle to score points. He is currently down in 14th.

James Townsend: Some of those people cheering when Vettel took Hamilton were probably moaning when Vettel was dominating back in 2011/2013.

Rob Douglas-Reeves: Wonder how Alonso feels? His old Ferrari..has become a Ferrari again, his McLaren has become a....well a UnReliant Robin!

A train of cars is building up behind eighth-placed Nico Hulkenberg, leading to this gem from Jenson Button on the team radio...

"I'm a little bit surprised - we seem to be catching cars. Quite a few cars," says the Briton.

Nico Rosberg was back out in fourth but quickly on the back of Kimi Raikkonen, eventually making his move along the pit straight and he is into P3. Ahead of him, Lewis Hamilton is 19.3 seconds behind Sebastian Vettel. "What's our target," he asks over team radio. "We are going for the win."

Mirror journalist Byron Young: Fascinating battle for victory and VET certainly making the Mercs work. 20s ahead, one pit stop behind. Order: VET, HAM, RAI, ROS. 15-JB

Daniil Kvyat gets beyond his Red Bull team-mate Daniel Ricciardo at Turn One but that work is undone as his sent spinning by Nico Hulkenberg.

Lewis Hamilton returns with medium tyres and is back out in third. That turns into second as Nico Rosberg heads in, but stays on the hard tyre.

David Coulthard
BBC F1 co-commentator

"You see Hamilton right on the edge of the grass before he comes in to the pit lane. Why did they decide to go on that tyre - was it overconfidence? I can't recall a time in 2014 Mercedes being overtaken by another car unless they had technical problems."