Top four now is Carlos Sainz, Lando Norris, George Russell and Lewis Hamilton. A quick radio call to his engineer tells Hamilton the gap is six seconds to Lando Norris in second and the hunt is still on.

Alice Powell
British racing driver on BBC Radio 5 Sports Extra

The two Mercedes are going to be going for it now, they are charging down Lando Norris, but Lewis is slightly quicker than George.

Lando Norris in second and race leader Carlos Sainz are on hard tyres that are 33 laps old. Is Charles Leclerc in peril once again? Yep. His 33-lap old rubber can't defend again Lewis Hamilton's fresh mediums. The seven-time world champion is up to fourth.

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Is this the moment George Russell has been waiting for? The Briton takes a look but backs off. He's still on the red tail if the Ferrari of Charles Leclerc as they reach Turn 14.

Here we go then... Russell is through on Leclerc! He's back in the podium places.

How many Mercedes team members can you huddle around a TV monitor? Everyone is looking over Toto Wolff's shoulder to check on George Russell's and Lewis Hamilton's progress.

The Mercedes drivers are still in fourth and fifth but how long before we get a scrap on our hands for the race victory?

Pierre Gasly and Oscar Piastri have moved up into sixth for the Alpine and seventh for the McLaren but behind Piastri, Liam Lawson can't quite keep Max Verstappen at bay. The Dutchman takes eighth but the 21-year-old is still in points after leaving Verstappen just enough room to pass.

Alice Powell
British racing driver on BBC Radio 5 Sports Extra

Lewis Hamilton is fastest man on track at the moment, he was about half a second quicker than George Russell that last lap so George seems to have lost a bit of pace which is a bit bizarre, still quicker than Charles Leclerc in front by at least about two seconds.

Andrew Priestley: Mercedes 1-2?

Carlos Sainz is asking how his pace is as the gap to Lando Norris in second is 1.866 seconds. Are those extra sets of medium tyres that George Russell pointed to in his post-qualifying interview going to deliver Mercedes a race victory in Singapore?

Liam Lawson is in eighth place with the Haas of Nico Hulkenberg and the red Bull of Max Verstappen itching to take his place.

Charles Leclerc is the Ferrari who is in the sights of the medium tyres of the George Russell and Lewis Hamilton.

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A yellow flag for Fernando Alonso! The Aston Martin is stopped but the 42-year-old can get his Aston Martin going again and carry on. Sorry, folks. No safety car needed for that one.

Alice Powell
British racing driver on BBC Radio 5 Sports Extra

I think it's going to be hard for George now to try and close that gap down, as you said it's a 14 seconds is the interval between him and Leclerc and Leclerc has got to the lead about three, four seconds. As I've been saying, it's easy to catch but passing is another thing, especially when Leclerc is going to be there making it really difficult for Russell to get past.

Meanwhile, Fernando Alonso served his five-second time penalty during his pit stop but it was a disaster of a stop and the Spaniard is in 17th place.

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Virtual safety car is gone and George Russell and Lewis Hamilton are now on new medium tyres in fourth and fifth. Carlos Sainz, Lando Norris and Charles Leclerc did not stop and are now under pressure from the two Mercedes.

Now is the time for double stacking at Mercedes! George Russell and Lewis Hamilton are both in on lap 45 to change onto a brand new set of medium tyres.

Harry Benjamin
BBC F1 Commentator

You can hear the frustration in his voice, the birthday boy was having a brilliant race and that has now ended, steering wheel out of the car as a bit of steam comes off from the heat of the tyres.

"Aghhh no no!"

Esteban Ocon is out of his Alpine. The car just gave up on him after the Frenchman had done all the hard work to get himself up into seventh place.

Alice Powell
British racing driver on BBC Radio 5 Sports Extra

George Russell is doing a great job of managing his tyres because he's kept the gap fairly similar, once Sainz gains a couple of tenths then so does George Russell, when he loses, again, so does George Russell. The pressure is still on, there's still a long way to go.