Mick Schumacher gives us an update on the weather. "The conditions are quite **** out here, to be honest," says the Haas driver.

The Ferrari of Charles Leclerc is out too but he gives his engineers a nervous few moments as he twitches on his out lap. Mick Schumacher in the Haas also experiences his own snap.

Colourful ponchos galore in the crowds. Looks like a soggy autumn day rather than a sunny spring/summer outing.

George Russell is not anywhere at the moment, neither is Esteban Ocon. Both still have their coats on and are chatting to crew members as the Haas boys and the Alfa Romeo pair head out on track.

Lando Norris was out of the car and going over data with his engineers while other drivers were still trying to improve their lap times yesterday.

The McLaren man was 12th in first practice and eighth in the second session and earlier on Saturday, gave us an update on his situation as the team prepares for qualifying today.

The weather looks grim.

And here's the man himself to say hello.

Any questions you have for Jack, send them to #bbcf1 on Twitter - even if you just want your name read out on the radio.

Jack seems open to answering anything that's on your mind, so make sure it's a good one for the Williams reserve driver to ponder.

BBC Radio 5 Live Sports Extra

Williams reserve driver Jack Aitken is with the 5 Live F1 team all weekend on commentary duty.

The two Jacks, Jennie and Andrew are waiting for your company right now. Third practice is online-only, so click the audio link at the top of the page to listen in.

Qualifying later on will also be available on BBC Radio 5 Live Sports Extra, so use the BBC Sounds app or your DAB radio (or this page) to tune in from 20:55 BST.

Pirelli have nominated their softest tyre compounds for a third race weekend in a row. Take your pick between the C3 (white, hard), C4 (yellow, medium) and C5 (red, soft).

Image source, Getty Images

Mercedes chief technical director James Allison is a prominent figure in the Silver Arrows' garage this weekend.

Allison gave Sky Sports his opinion on what has gone wrong with the eight-time world constructors' champions this season. "I think we clearly didn't see the porpoising problem coming," he said.

"And I think that's true to a greater (or lesser) extent up and down the pit lane, and that's a problem we've largely got on top of.

"We're still left with a car that doesn't have enough rear grip, is suffering from a little bit of an unpleasant ride characteristic - because all these cars are very stiffly sprung and very close to the ground - and it's just not an overall competitive package yet.

"But why we have arrived like that? I guess that will become clearer over time."

Image source, Getty Images

Lewis Hamilton's words weren't exactly a surprise, given Mercedes team principal Toto Wolff called the car a "**** box" after last week's race in Baku.

But Canada is a track where Hamilton has enjoyed some of his highest career moments, so what does this car feel like to drive around the 4.361km circuit?

"One touch of the kerb and the thing goes flying," he said. "It’s so stiff and here you need to be able to use the kerbs. It’s very, very tricky.

"It’s not the Montreal that I know, that I’m used to and that I have experienced in my career. It’s the worst that I’ve felt any car here. I’m hoping overnight we can make some changes but fundamentally, it’s just the fundamentals… it is what it is. It’s going to be a struggle.

"It’s just a monumental fight the whole time to keep it out the wall. When it bounces – when the car leaves the ground – and then when it lands, it grips up and goes in lots of different directions, so you’re trying to catch a car that jumps, hops, grips, hops, grips – it’s tough.

Image source, Getty Images

While others left the Montreal track in good shape, Lewis Hamilton was once again less than impressed with Mercedes' performance.

In a honest and open interview after second practice, the seven-time world champion gave us an insight into how the day's running had gone for the troubled team.

"Pretty much like every Friday for us, trying lots of different things," said Hamilton.

"Experimented with the floor on my side - which didn’t work. Nothing we seem to do with this car seems to work, so we’re trying different set-ups – me and George – with much different set-ups in FP2, just to see if one way works and one way doesn’t.

"It’s like the car is getting worse. It’s getting more and more unhappy, the more we do to it. We’ll keep working on it – it is what it is. This is the car for the year, so we just have to tough it out and work hard on building a better car for next year."

Andrew Benson
BBC Sport’s chief F1 writer in Montreal

Image source, Getty Images

Red Bull's Max Verstappen narrowly headed Ferrari's Charles Leclerc in second practice at the Canadian Grand Prix.

The world champion was 0.081 seconds clear of the man who until not too long ago appeared to be his title rival, at the end of an impressive day for Red Bull.

Ferrari’s Carlos Sainz was third quickest, 0.225secs off the pace.

And Sebastian Vettel was a surprise fourth for Aston Martin, at the home race for team owner Lawrence Stroll, ahead of Fernando Alonso’s Alpine.

The biggest headline from first practice though was a little groundhog escaping with its life intact after running across the track in an attempt to make it to the other side.

Luckily, the Ferrari of Carlos Sainz just avoided our furry friend and off he or she went to watch the rest of the session from a safe distance.

With all animals out of harm's way, it was on to second practice...

Image source, Getty Images

Andrew Benson
BBC Sport’s chief F1 writer in Montreal

Image source, Getty Images

Max Verstappen set the pace in first practice, 0.246 seconds quicker than Ferrari's Carlos Sainz.

Alpine's Fernando Alonso was third, despite settling his fastest time on the medium-compound tyres, which are harder and slower than the softs most used for their best times.

Sergio Perez was fourth, 0.461secs slower than Verstappen, and Charles Leclerc fifth, 0.508secs off the pace.

Mercedes driver George Russell was sixth with Lewis Hamilton two places and 0.055secs behind his team-mate.

There is still a very long way to go in the championship, but have Charles Leclerc's recent problems left the Ferrari man with too much of an uphill climb to get himself back into the title fight?

Reliability issues and tactical errors have crept in at Ferrari, and a 10-place grid penalty this weekend means Leclerc is almost certain to lose more ground to the Red Bull drivers, who have looked so strong over the last few races.

Send us your thoughts using the hashtag #bbcf1 on Twitter.

We left off yesterday with the news that Charles Leclerc had avoided taking a grid penalty, after his engine troubles at the Azerbaijan Grand Prix forced him to retire from the race and concede even more points to rival Max Verstappen in the championship.

After second practice had finished, however, the news broke that the Monegasque driver would now take a grid penalty for excessive engine usage.

Ferrari have fitted a third electronics control unit at the Canadian Grand Prix, triggering an automatic 10-place grid penalty for Sunday's race.

Good evening, folks. Some Saturday night Formula 1 action lies before us to enjoy tonight.

Final practice session gets going at 18:00 BST.

Qualifying goes green at 21:00 BST.

The heavy rain ended up coming late in the day on Friday, so plenty of running took place at the Circuit Gilles Villeneuve as teams refreshed their memories after Canada's three-year absence.

We'll look back on who was quickest and who was left with more questions than answers.

First, a huge blow for Charles Leclerc this weekend...