Puncture for Ricciardo. An overtake of Giovinazzi saw them bang together. The stewards have noted the incident. The fun for Ricciardo and the fun for Giovianzzi could well be done.

"I think we need to box."

Engineer: "Keep going."

Vettel leads, with a six second lead over team-mate Charles Leclerc.

Vettel has grabbed the lead thanks to a Ferrari strategy, which hurt then leader Leclerc.

Verstappen third, Hamilton fourth. Giovinazzi, after his moment under the Singapore lights, is dropping like a stone.

Will Nicholls: Did Mercedes strategists all collectively throw their brains in the bin during the mid-season break? Looks like they’ve cost Hamilton big time again.

ChocolateHead: I am pretty sure Alfa and Giovinazzi himself are praying for a safety car right about now.

Probably Pierre Gasly and Daniel Ricciardo too.

Image source, Getty Images

Antonio Giovinazzi's moment in the lead is over. Still, he has led a race for four laps.

Sebastian Vettel is in the lead, an empty track in front of him to pull away, hunting out his first win since August 2018.

"Keep looking after the tyres, it won't be easy to get to the end."

Image source, Reuters

Jack Nicholls
BBC Radio 5 Live F1 commentator

Ooooooooooooh Vettel just sent one up the inside of Pierre Gasly and knocked him out of second.

Sebastian Vettel is not messing about either. He sends an ambitious lunge from nowhere into and past Pierre Gasly.

Only Giovinazzi is ahead of him so Vettel will soon be out in front.

Am loving Antonio Giovinazzi still leading. Just stay out as long as you can and enjoy the moment!

Image source, Getty Images

"What do you think we should do?"

Vettel up to third, no contest as Ricciardo is still on the tyres he started with.

Antony Short: Terrible strategy by Mercedes

Helles Mammut: Bottas going extra slowly so he doesn't come out in front of Hamilton, disgraceful performance from Mercedes... No wonder they renewed Bottas contract, he's content being the b-side...

Kayleigh: Remember when Merc told Ham to speed up in Abu Dhabi 2016 and he wouldn’t? VB should do the same if it happens, and take the win

Take a picture of this top 10...You won't see it much...

1. Giovinazzi
2. Gasly
3. Ricciardo
4. Vettel
5. Stroll
6. Leclerc
7. Verstappen
8. Hamilton
9. Bottas
10. Albon

The Mercedes message telling Bottas to slow down leads to Hamilton coming out of his pits 0.6 seconds ahead of Bottas. Hamilton in eighth.

David Jarvis: If Hamilton wins this it's not because of a great Mercedes strategy, it would be because of pure luck. Very bizarre by Mercedes.

Karen Waddy: Is Lewis hoping for a safety car?

Ian Jones: Bottas confirmed now as a defensive gunner in the title race then

Hamilton in, Giovinazzi leads the race!

"Valtteri, it's James. Can you do a 48.8 please we're going for a stop. I need to make sure we can get these tyres working for the team."

Valtteri Bottas has just been told to, in effect, slow down so that he won't be ahead of Hamilton after the Briton pits. Team orders at Ferrari, team orders at Mercedes.

"I know these are not great times but this is all these tyres have."

Helles Mammut: Mercedes throwing the race away as we speak...