Lap 70: No further action from race control over Stroll, who is eighth behind Hamilton. That means we can get focused back on Norris vs Perez.

Hamilton meanwhile pits a second time after opening up a gap on the Canadian and puts on new soft compounds as he looks to go for the fastest lap point.

Every point could be crucial in this extremely tight title race. Even if they get the fastest lap, it’s been a grim day for Mercedes. 

Lap 67: Lance Stroll is under investigation for a pitlane infringement having just swapped on to soft tyres.

The Aston Martin driver put his left-front tyre on the pit exit line but it was unclear if he went over it.

Meanwhile, Perez is within a second of Norris now and has a good 10 laps to try and get past the McLaren.

Lap 64: As the gap between Norris and Perez closes, at now less than three seconds, Verstappen is again comfortably clear of Perez.

The only changes to the order look likely to come in ninth, where Giovinazzi is hoping to overtake Ocon, and potentially in third where Perez wants to displace Norris.

That is unless Hamilton can claw back Gasly. But that doesn’t look likely.

Lap 59: Perez is charging down McLaren’s Lando Norris in the final podium position. His Red Bull has fresher compounds and the Mexican is smelling blood. 

“I’m struggling man. The car is awful on these tyres,” says Norris. Perez is still five-and-a-half seconds back for now.

Lap 56: Sainz trails race leader Verstappen by around three seconds with a little over 20 laps to go. Can the Ferrari catch up to the Red Bull for some excitement in the closing stages?

Probably not, to be honest. Verstappen’s tyres are newer and he’s looking fine out in front. 

Lap 51: No change for Lewis Hamilton, who looks set for a miserable afternoon in the principality. He’s over two seconds behind Gasly.

Antonio Giovinazzi is within DRS range of Esteban Ocon as the Alfa Romeo looks to jump the Alpine into ninth.

But elsewhere further ahead, there’s no real overtaking opportunities at present.

Ricciardo meanwhile is lapped by Norris. Probably as horrible a day for the Aussie as it has been for anyone, including Leclerc and Bottas.

Lap 47: Daniel Ricciardo, down in 12th, has just been lapped by race leader and former Red Bull team-mate Verstappen.

He’s just had an unsuccessful undertake on Kimi Raikkonen and is soon to be lapped by Lando Norris in the other McLaren.

Lap 45: An update on the race order…

1st: Max Verstappen, 2nd: Carlos Sainz
3rd: Lando Norris, 4th: Sergio Perez
5th: Sebastian Vettel, 6th: Pierre Gasly
7th: Lewis Hamilton, 8th: Lance Stroll
9th: Esteban Ocon, 10th: Antonio Giovinazzi
11th: Fernando Alonso 12th: Kimi Raikkonen
13th: Daniel Ricciardo, 14th: Nicholas Latifi
15th: Yuki Tsunoda, 16th: George Russell
17th: Nikita Mazepin, 18th: Mick Schumacher
19th: Valtteri Bottas OUT, 20th: Charles Leclerc OUT

Lap 37: Verstappen and Perez both pit for Red Bull without any issues. The Mexican gets out of the pitlane well in front of Hamilton and is sat up in fourth after going longer.

What a result this will be for the Milton Keynes outfit in the Drivers’ and Constructors’ Championships if it stays like this.

Lap 33: Hamilton fuming after Aston Martin’s Sebastian Vettel overtakes both him and Gasly on the overcut.

“I don’t understand guys, I saved the tyres to go longer, you made me stop before everyone,” he says.

The Briton is seventh. Mercedes meanwhile tell Ted Kravitz of the Bottas incident: “It was a crossthreaded wheel nut. The wheel gun machined onto the axle.”

That meant the wheel could not be changed no matter how hard the Silver Arrows tried.

Lap 32: DRAMA! Hamilton pits first for Mercedes with Bottas still out, a nice 2.2 second stop, but he can’t get ahead of Gasly despite an undercut attempt.

Then a lap later, they can’t get Bottas’ front right tyre off. The Silver Arrows are trying everything and it just won’t come off. 

His race is over because of a wheel nut that refused to budge. The Finn really has terrible luck doesn’t he?

Lap 26: Bottas says there’s “not that much left in the tyre” as he trails Verstappen by four-and-a-half seconds.

The Red Bull driver comfortable out front with his title rival Hamilton over 15 seconds back down the road.

Lap 20: “Let’s show us how much more pace you’ve got,” Bottas is told on the radio.

Not long until the pitstops now. Can they help shake up the order? There’s been no changes since the first lap.

Norris meanwhile gets a black and white flag for track limits at turn 10, presumably cutting the chicane. “No more mistakes,” the McLaren pitwall say.

Lap 17: Williams’ George Russell is still running despite battling power unit issues. The Briton is running down in 15th.

His countryman Hamilton meanwhile says on the Mercedes radio: “These guys are super slow ahead.”

The seven-time world champion is around two seconds behind Gasly still.

Lap 13: “Tyres are good, I’m managing quite a lot. Probably a second if I go all out or more,” says Sebastian Vettel in the Aston Martin.

Seventh-placed Vettel is over six seconds behind Hamilton despite that.

Further ahead, leader Verstappen sets a new fastest lap in his Red Bull with a 1:16.265. Team-mate Sergio Perez soon beats it and goes 1:15.881.

Lap 9: “Yeah, it’s hard to follow,” says Hamilton as he trails the AlphaTauri of Gasly, who is two seconds ahead of him in fifth.

Hamilton is 10-and-a-half seconds behind race leader Verstappen. It’d be some turnaround for him to win today.

Lap 4: Not a good start for Daniel Ricciardo with the Australian’s McLaren dropping from 11th to 13th.

We’ve got 74 more laps to come in Monaco so let’s hope for some more excitement.

Verstappen a little over a second ahead of Bottas, with Sainz four seconds behind the leader.

Lap 1: Verstappen gets away well on the start on the outside line, coming across to cover off Bottas, who had clean air with no Leclerc ahead of him. 

Bottas locks up into turn one but stays ahead of Sainz, who is being closely followed by McLaren’s Lando Norris.

Pierre Gasly is behind Norris with Hamilton still down in sixth. Sebastian Vettel, Sergio Perez, Antonio Giovinazzi and Esteban Ocon complete the current top 10.

IT’S LIGHTS OUT AT THE MONACO GRAND PRIX!

1.50pm: Mercedes team principal Toto Wolff tells Sky Sports F1: “I’m surprised because they checked the box. It’s a shame, he’s Monegasque and he deserved it, his lap was spectacular.

“Max can score 25 points, that’s not good for us. We wanted Charles to lead. Let’s see what opportunity it gives to Valtteri.

“Lewis and Valtteri can work together here. Maybe Lewis can play a role. He isn’t happy of course but he’s a fighter. We’ve had setbacks in Monaco before, let’s see how he can climb from P7.”

1.45pm: More disappointment for Leclerc – he will not race at all at his home circuit.

“We’re not racing I am afraid,” Laurent Mekies tells the stewards on team radio. “Sorry to hear,” replies race director Masi.

Ferrari have a problem with the left driveshaft that is impossible to fix before the race start.

Leclerc looks gutted as he walks through the paddock despite cheers from the crowd. Verstappen now has a golden chance to make up ground on championship leader Hamilton.

1.35pm: The pits are closed and that’s it confirmed, Leclerc will be starting from the pits if he can start at all. Devastation for the Monegasque, but those gearbox problems are too much for Ferrari.

“We have an issue. We’re not going to the grid. We try to fix it here. We will not make it to the grid,” Ferrari tell FIA race director Michael Masi.

It’s Verstappen on the front row on his own now, as the grid will not be shuffled up, with Bottas getting clean air in third on the inside of the Red Bull.

Can the Dutchman clinch a race win and overtake Hamilton in the Drivers’ Championship?

1.30pm: Here’s what Hamilton, the last race winner in Monaco back in 2019, meanwhile had to say yesterday after qualifying only seventh.

“It didn’t feel too bad on Thursday and we made some changes and it was pretty terrible today,” he told Sky Sports F1. “We go back to the drawing board.

“It’s almost impossible to overtake here so…. Up front where we are it’s pretty much the case when everyone is on the same speed. Saturday is the day [in Monaco], so obviously that really does put for sure the win out of reach.

“I guess the minimum would be hopefully seventh and then we’ve got to somehow see how we can move forwards.”

He added on social media: “Failure never feels good but it provides us with opportunities for growth. We have struggled this weekend, for many different reasons but we win and we lose together.

“Tomorrow will be tough, so if you got time, do a little rain dance for me. Let the heavens open.”

1.25pm: Pre-race drama! “No, no, no, the glovebox guys,” Leclerc says on his team radio as he crawls round the track on the formation lap.

Leclerc heads back to the pits and is going through the gears as Ferrari look to get to the bottom of their problems. Will he have to start from the pits?

There’s not long for Ferrari to change the gearbox if they have to.

It’s certainly an intringuingly mixed grid. Might we get some Monaco drama after all? Let’s hope so.

1.10pm: Ferrari’s social media statement on pole-sitter Leclerc earlier was as follows…

“Following further in depth checks this morning, no apparent defects were found on @Charles_Leclerc’s gearbox, therefore the Monegasque driver will start today’s race from pole position, as per the qualifying result.”

1pm: Good afternoon and welcome to Express Sport’s live coverage of the 2021 Monaco Grand Prix!

Charles Leclerc starts on pole after Ferrari confirmed no gearbox damage to his SF21 despite his shunt into the wall at swimming pool at the end of qualifying.

The Ferrari crash meant Max Verstappen and Valtteri Bottas were denied a chance to snatch pole as the session was red-flagged.

And that means it’s advantage to the Monegasque in Monaco, a tricky notoriously tricky to overtake on.

Of the other big stories, reigning world champion Lewis Hamilton starts well down in seventh after a dreadful Saturday.

The Briton has ruled out taking a race win today but he’ll hope to lessen the damage as Verstappen looks to cut the gap to the championship leader.

Today’s race gets underway at 2pm and we’ll have live lap-by-lap updates for you once the lights are out.