• Valtteri Bottas leads after pole-sitter Lewis Hamilton makes early pit stop under virtual safety car
• Nico Hulkenberg walks away after being flipped over in frightening first-lap collision with Romain Grosjean, who is not penalised
• Sebastian Vettel second, Daniel Ricciardo third, Max Verstappen fourth
• Kimi Raikkonen forced to retire on Lap 8 with power failure

Image source, F1 Twitter

Aaron Prior: Have to say, controversial as it is, the halo has rather proved its worth this season I think. Amazing Hulkenberg can get up and walk away from that.

Jeremiah: Hartley having a fight with the walls and he is all by himself.

Roxy: Pfft, thats both my favourites out now. This better be a good race now.

Rob Hill: Verstappen driving around in a bad mood, with a faulty engine, is exactly what this race needs. Fun for everyone except the other drivers.

Lewis Hamilton: "Did we know we would come out behind the Red Bulls?"

Peter Bonnington, Mercedes race engineer: "Just remember that you're going to the end now."

Image source, Reuters

A replay from lap four shows Brendon Hartley swinging his rear end into the soft barrier after he came out of the corner too wide. But he just bounces off it and continues to drive.

Jack Nicholls
Radio 5 live Formula 1 commentator

"Hamilton decided to pit, so did Charles Leclerc, so did Romain Grosjean. That's good news for Leclerc and Grosjean, who were on the hypersofts. Interesting strategy with Hamilton, with echoes of what happened in Austin, when he was pitted under the virtual safety car, and it perhaps cost him the race."

Image source, Getty Images

1. Bottas
2. Vettel
3. Ricciardo
4. Verstappen
5. Hamilton

Kimi is out of the car, and walks back into the paddock with his helmet on.

Jolyon Palmer
Former Renault driver on BBC Radio 5 live

"Verstappen just threw it up the inside, and Ocon could choose whether to crash or get out of the way, and he just about got out of the way."

Image source, Getty Images

Hamilton pits for supersofts, he's the first of the top five to pit. We're still under a safety car.

Kimi is stranded on the track.

KR: "What's happening I don't have power?!"

Jack Nicholls
Radio 5 live Formula 1 commentator

"This feels like it's going to end in tears between Ocon and Verstappen."

Ocon and Verstappen go head to head once again. Verstappen went up the inside almost making a replay of Brazil, but Ocon swerves out of the way and keeps his eighth place. But this won't be the end of it.

1. Hamilton
2. Bottas
3. Vettel
4. Raikkonen
5. Leclerc
6. Ricciardo
7. Grosjean
8. Ocon
9. Verstappen
10. Perez

Image source, EPA

MV: "Mate engine's hot!"

E: "Max when you can fail C3 fail.

Romain Grosjean, on being told he will face no penalty over th Nico Hulkenberg incident: "Good. I was very sorry for him, but there was nowhere I could go."

Followed by numerous barrel rolls before sliding into the wall upside down.

Image source, F1 Twitter

Image source, F1 Twitter

Verstappen is down in ninth place after losing places at the start, Lewis Hamilton and Valtteri Bottas head the field.

Jolyon Palmer
Former Renault driver on BBC Radio 5 live

Good decision for the stewards not to penalise Grosjean. There are a lot of cars bunched together on the opening lap and things happen. I don't think he was at fault at all.

The stewards say no further action on the incident. Just a pure racing incident which was pretty scary to see.

Jolyon Palmer
Former Renault driver on BBC Radio 5 live

Hulkenberg looks fine in the end. You could hear the panic in his voice. That's one of the fears of the halo, that it traps you in the car. The marshals and medical crew were there pretty quick and they've got him out OK. Grosjean's left front hit Hulkenberg's rear and flipped him round. It was a scary looking accident, and it's great to see he's OK.