David Coulthard
BBC F1 co-commentator

"Great Finn on Finn action there. This is great to see Raikkonen back and so racey. He saw the opportunity - he hasn't made it stick because Bottas had great reactions to do the cut-back."

Plenty of excitement in the Williams garage as they watched that thrilling battle between Valtteri Bottas and Kimi Raikkonen unfold.

Some more great wheel-to-wheel action involving Kimi Raikkonen! The Finn fancies a crack at his compatriot Valtteri Bottas and swoops in at Turn 4, briefly taking the position only for Bottas to immediately fight back. Raikkonen tries again but Bottas fends him off to retain fifth. 

Daniil Kvyat returned to the circuit in ninth, just ahead of Jenson Button. Meanwhile, Felipe Nasr pits from second, takes on softs and is out in 12th, behind the McLaren of Fernando Alonso.

Lotus's Romain Grosjean talking to BBC F1's Lee McKenzie after his heavy shunt:

"Tomorrow morning it's going to be a little bit sore but I can be very happy with the safety in F1. Here I am. I feel sorry for the guys because there is going to be a lot of work on the car.

"We need to understand what happened. You do realise quite early that you can't do anything any more so you leave the steering wheel and get muscles as strong as you can. I was glad when I opened my eyes [and] I was fine. 

"I am very thankful we have made some progress with technology."

Daniil Kvyat makes his first stop soon after, leaving Felipe Nasr, currently second, out there as the only driver yet to make a stop.

Sean Harrison: Bad luck for Rosberg but Hamilton had more of it last year and still won the title.

Alex Meek: Talking about fair? How many retirements did Hamilton have last year in comparison and still won the championship? Just karma. 

Lewis Hamilton pits with a huge advantage at the front. It is a relatively leisurely stop with no real pressure on the Mercedes. He takes on softs before emerging back in P1 with a 7.4s advantage over Daniil Kvyat, who has yet to make his first stop with 33 laps gone.

In comes Sebastian Vettel and he is back out ahead of Valtteri Bottas, into P6. Kimi Raikkonen is next in, can he also get back out ahead of Bottas? It is going to be close...but Bottas just keeps himself ahead.

Valtteri Bottas has some traffic ahead of him, he struggles to get the better of Carlos Sainz but finally manages it. However, he has lost a few valuable seconds.

Sebastian Vettel is coming in now for his first stop...

Lewis Hamilton is continuing to pound the circuit on those supersoft tyres he started the race on, 28 laps and counting. 

Hamilton's advantage over Sebastian Vettel is 15s. A supremely comfortable day for the Briton.

Engineer to Sebastian Vettel: "OK Bottas is in traffic so it's good. Keep pushing, this is a crucial stage of the race."

David Coulthard
BBC F1 co-commentator

"Bottas needs to hit it now and try to get the maximum out of these tyres so Vettel doesn't take advantage and leapfrog him."

With Sebastian Vettel gaining on Valtteri Bottas, the Williams is the first of the leaders to pit. He is back out in 11th after switching to softs, with Vettel elevated to second.

Valtteri Bottas: "Guys, the tyres are dying."