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Lando Norris, who will start fourth, spoke about the wet weather conditions on Sky Sports: "It's unpredictable, we'll wait and see. It will be a dry start, after that, who knows. It will be a game of anticipation the whole race, I just need to keep it straightforward for the time being."

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Kimi Antonelli is aiming to secure a hat-trick of victories today following his back-to-back wins from pole position in China and Japan before the five-week pause. He's seven clear of team-mate George Russell now but could extend his lead over the Briton if things go his way in Miami.

Max Verstappen's four points gianed in the sprint race has moved him level with Alpine's Pierre Gasly on 16 points. Gasly himself scored a point in the sprint on Saturday and is once again starting inside the top 10 for the main grand prix.

In the constructors' championship, Mercedes are clear of second-placed Ferrari by 45 points, while Red Bull have lifted themselves above Alpine and Haas and into fourth place.

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Max Verstappen, who will start second, spoke about the wet weather conditions on Sky Sports: "It's pretty dry, just some wet spots under the bridge but it should be OK.

"The more we wait, the more rain is coming. If we can start it now at 13:00. I think it is more the lightning in the area, that is of course a bit trickier here.

"The car is completely different now, it's slippery. These cars don't have a lot of grip in the wet."

BBC Sounds

Jennie Gow, Harry Benjamin, F1 correspondent Andrew Benson and 1996 world champion Damon Hill are in position and ready to take us through this Miami Grand Prix - wet or dry.

Click the 'listen live' tab at the top of the page, tune in via the BBC Sounds app if you're on the go or if you have a smart speaker, just say "play 5 Live".

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The first three races of the season were all run in dry conditions, so how these new generation of cars will cope in the wet weather is somewhat of a mystery. Only Ferrari and Red Bull have had some track time in the wet during the testing days in Barcelona.

During the enforced break, Formula 1 made a series of technical tweaks to address concerns about the new engine regulations that were introduced for this season. We've already had a mini race this weekend with the changes in place but running a full grand prix with heavy downpours predicted could throw up some chaos.

"It's going to be a big challenge on race day for everyone to perform, find the limit," said world champion Lando Norris, who starts fourth on the grid.

"Obviously, you can't afford to make any mistakes. We're thrown in the deep end, but that's what we're here to do. I look forward to it."

Norris' McLaren team-mate Oscar Piastri said Sunday is going to be "a voyage into the unknown" for all drivers, adding: "When it rains here, it normally is pretty torrential, so it could be an interesting day."

Andrew Benson
BBC F1 correspondent in Miami

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In the unlikely possibility that this is a dry race, it would most likely be a one-stop strategy on the medium and hard tyres, as so many grands prix are these days.

In the wet, of course, all that goes out of the window, and all that is left are question marks. How will the cars be to drive in the wet? Only the Red Bull and Ferrari drivers have any kind of an answer to that because they experienced it in testing.

Wet conditions are always tricky but the new engines, with their 50-50 split between internal combustion and electrical power, make it much harder again. The electrical component can be turned down in slippery conditions, but even so there is a lot of power arriving with a bang.

The behaviour of the engines has been unpredictable even in the dry, not least because the systems learn on the fly and change the engine’s power delivery for optimum performance. But the margin for error in the wet is much smaller, and drivers like predictability from the engine. In fact, they need it, as they try to anticipate changing grip levels from corner to corner.

They are the best drivers in the world, but mistakes are inevitable, nonetheless.

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McLaren's Oscar Piastri, speaking to Sky Sports: "There's a few things we could've done a bit better [in qualifying], the competition did a better job of getting the most out of their cars. We've got an interesting race either way, we'll be fighting till the end."

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Alpine were bottom of the pile of the constructors' championship in last year but now the French team, complete with Mercedes engine this season, are firmly in the midfield mix and sitting in sixth place on 17 points.

The majority of those points have been scooped up by Pierre Gasly but this weekend in Miami, Franco Colapinto has outqualified his French team-mate for this first time this year.

The Argentine driver has lots of support in the grandstands this weekend - he also had an estimated 600,000 supporters come to see him in a road show in Buenos Aires last month - and said the changes made during the break are starting to click into place.

"After Japan, we turned around a lack of pace on my side and we changed some things, and it looks like it's worked so far here in Miami," Colapinto said.

Argentina and Inter Miami forward Lionel Messi and his family paid a visit to the Mercedes garage on Sunday. Title leader Kimi Antonelli, wearing a Messi shirt, explained how an F1 steering wheel works to the football great and his family, who looked impressed.

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Damon Hill has spoken about "inspirational" Alex Zanardi, who passed away on Friday evening.

The Italian had both his legs amputated after an accident in a race in the US-based Champ Car championship at Germany's Lausitzring in 2001.

He raced for Jordan, Minardi and Lotus in F1 in the early 1990s before switching to the Cart championship in the United States, winning the series in 1997 and 1998, before returning to F1 for the 1999 season with Williams.

Following his injury he took up handcycling and won two golds in the Paralympics in London in 2012 before doing the same in Rio de Janeiro four years later.

"He had such an incredible spirit, such enthusiastic, positive individual," said the 1996 world champion, who is commentating for Radio 5 Live today..

"He did inspire millions of people, by showing what could be done even if you've had a catastrophic injury."

Select the link below for Andrew Benson's obituary of Zanardi:

• The remarkable life of Zanardi, a 21st century hero who inspired millions

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A little look over his shoulder and George Russell will see Charles Leclerc not too far behind him in the drivers' standings - 13 points to be exact.

Ferrari are stacked with upgrades this weekend and Leclerc has shown his good pace by topping the sole practice session, finishing third in the sprint and qualifying P3 for today's main grand prix.

However, he said the Scuderia still need to find improvements. "At the end of the day, we were just not fast enough today and this weekend," Leclerc added.

“We brought a significant package, which helped us, but there is still here and there where we need to improve a little bit."

The Monegasque driver also wasn't best pleased with polesitter Kimi Antonelli's wheel-to-wheel racing in the sprint event, calling it "really bad" over the team radio. He did say afterwards he was being a bit harsh and his words were said the heat of the moment.

Laurance: My prediction... Piastri to win, then Max second with Antonelli third. Max to be in front on first corner but McLaren to use pit strategy to overtake. Leclerc fourth and Hamilton fifth. If rain hits then Hamilton to take place of Antonelli.

McLaren CEO Zak Brown is chatting to Martin Brundle on his grid walk on Sky Sports. Brown says it's still up in the air as to what time exactly the rain will hit the Miami circuit, but he adds: "If it comes, it'll come pretty hard."

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Mercedes' George Russell, speaking to Sky Sports: "None of us have driven in the wet before in these new cars."

"From past experience, every time you drive in the wet, it's a different story. It's still hot even though it's raining, so the tyres perform completely differently. It's the same for everyone at the end of the day."

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George Russell has said the Miami International Autodrome is not one of his best tracks on Saturday in qualifying, fifth place was the best he could get out of the Mercedes - four places and 0.399 seconds adrift of his younger team-mate Kimi Antonelli.

Russell cut Antonelli's lead in the title race by two points when he finished the sprint in fourth but he'll have to find his way through Lando Norris, Charles Leclerc and Max Verstappen before he can take the fight to the Italian.

"It’s not really a major cause for concern, it’s just I know this [track] is a real struggle for me - low grip, really hot temperatures," said Russell, who won the opening race from pole in Australia.

If the race ends how it starts - Antonelli in P1 and Russell in P5 - then Antonelli will hold a 22-point advantage over second-placed Russell heading into the next grand prix in Canada at the end of the month.

Damon Hill spoke to the Chequered Flag podcast about the current championship leader, Kimi Antonelli.

He discussed initial concerns he had over Mercedes team principal Toto Wolff signing Antonelli: "I didn't know what Toto was doing in signing such a young driver."

Hill now feels Antonelli is "finding the talent everyone saw in him".

The 19-year-old Italian is starting on pole for the third time in a row today.

Have a watch of the video below.

Hannah: Definitely Max off the line! Kimi has struggled in almost all of the races this year but with the rain/spray it's anyone's game.

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McLaren's Lando Norris, who will start the race in fourth, spoke to Sky Sports before the race in Miami: "I'm feeling good, excited. We just have to wait and see what the weather is going to do today. It has been a good weekend so far. We are hoping today we can continue that. Let's just wait and see what the rain does."

On taking a step forward during the break: "It is early days. We haven't completed a weekend yet. We are definitely taking steps forward, the team have done a very good job.

"But, you can't really judge things on one weekend so let's wait and see what we can do in Canada, Monaco, Barcelona first, a few different circuits so we will be patient but we are certain we have made some steps forward. I am proud of the team but we are still not where we want to be so we will keep working."

The pit lane is open and cars are heading out on track in dry conditions. The wet weather is on the way, though, predicted to fall at the start time of 1pm local (6pm UK).

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The second of six sprint events this season gave us the first non-Mercedes winner of a race, with Lando Norris returning to form with a comfortable victory from pole position.

McLaren celebrated a one-two finish in the 100km dash, with Oscar Piastri holding off the threat of Charles Leclerc to take second place. Qualifying didn't go the same way, though, and world champion Norris was 0.385 seconds off Kimi Antonelli's pole marker and starts fourth.

Norris, who is 42 points behind Kimi Antonelli in the championship, felt he probably could've been P3 today - he was only 0.04secs off Charles Leclerc - but the hot temperatures and changing wind made things a but trickier than the sprint.

"It's not like we did a bad job," said Norris. "I think yesterday everyone did do a bad job and we capitalised and today we are more where we deserve to be."