The athletes involved in heat one are ready to rock.

Remember, Tiarnan Crorken is in heat two, Ben Pattison is in heat three, and Max Burgin in heat six.

Harry Poole
BBC Sport in Tokyo

Image source, Getty Images

At last, it feels as though Max Burgin is beginning to build serious momentum.

Only four men worldwide have run faster than the British 23-year-old this year, after he lowered his personal best to one minute 42.36 seconds by following the reigning Olympic and world champions over the line at the London Diamond League.

That time is within 1.5 seconds of David Rudisha's 2012 world record, and made him the third-fastest British man in history as he closes in on Sebastian Coe's 44-year national record.

It was the latest indication during a season in which the Halifax athlete has begun uncover his true potential, having smashed world, European and British records as a junior.

"I've had a lot of hurdles and haven't necessarily progressed in the same way people had hoped for me back then, but I'd like to think I'm over a lot of the challenges of the past five or six years," Burgin told me earlier this year.

"Finally, I am getting back to the trajectory that I was showing when I was younger and breaking all these records."

On his Tokyo prospects, he said: "It's very likely that, if you want to challenge for a World Championship medal, you'll need to be running a British record with the way the times are going."

Image source, Getty Images

Three British athletes are in action in the men's 800m, including Ben Pattison, who won a world bronze medal in Budapest in 2023.

He's joined by Tiarnan Crorken and 23-year-old Max Burgin, who has run the four fastest times of his career in 2025, with a best time of 1:42.36 in London.

Canada's Marco Arop is the reigning world champion but he was beaten to Olympic gold last summer by Kenyan Emmanuel Wanyonyi. The 21-year-old has run the three fastest times in the world this year and will be keen to upgrade his silver medal from two years ago.

Algeria's Djamel Sedjati completed the podium at the Paris Olympics while American 16-year-old Cooper Lutkenhaus came a surprise second at the USA Championships.

It's nearly time for first event of the day.

There are three Brits involved in the men's 800m, with Tiarnan Crorken in heat two, Ben Pattison in heat three, and Max Burgin in heat six.

The top three in each of the seven heats and the three fastest non-automatic qualifiers will advance to Thursday's semi-finals.

Let's have a look at the contenders, shall we?

So how is the medal table looking?

United States are the runaway leaders, with Kenya and Canada also winning multiple golds.

Great Britain, however, are yet to get off the mark.

Image source, BBC Sport

BBC iPlayer

After a thrilling day three at the 2025 World Athletics Championships, you won't want to miss any of today's action!

With four world champions set to be crowned in this session, we've got you covered.

You can tune in to BBC Two now before coverage moves to BBC One from 12:15 -13:00. Then we're back to BBC Two from 13:00-14:45.

You can also watch live on BBC iPlayer or by clicking the link at the top of this page.

If you do miss any of the key moments, the daily highlights show will be available to watch on iPlayer, Red Button and online from 17:00, and BBC Three from 19:00.

All times are in BST.

Harry Poole
BBC Sport in Tokyo

I wonder how many athletes have come across this wall of messages outside the stadium.

Not only do we have a wall covered by the signatures of all the medallists here at Japan's National Stadium, but there’s also hundreds of messages from fans that have been collected over the past couple of years in the lead-up to these champs.

There’s a variety of languages and tone to be found on the board, with messages of ‘have fun’ alongside ‘fight’ and ‘go to the top’.

Nice idea. I certainly feel pumped for day four now.

We want you to get involved in our coverage and have your say on the big talking points.

Armand Duplantis' world-record breaking exploits yesterday were just a little bit special, weren't they? Where does he rank among the all-time athletics greats?

Looking ahead to today, which events are you looking forward to? What has been your highlight of the world championships so far?

Get in touch using #bbcathletics, via WhatsApp on 03301231826 or text 81111 (UK only, standard message rates apply),

We'd love to hear from you, and don't forget to leave your name on text messages.

Elsewhere on day three...

• Men's marathon ended in a sprint finish as Tanzania's Alphonce Simbu pipped Germany's Amanal Petros to gold.
• Great Britain's Tyri Donovan and Alastair Chalmers qualified for the men's 400m hurdles semi-finals.
• Josh Kerr, Jake Wightman, and Neil Gourley reached the men's 1500m final.
• Swiss Ditaji Kambundji took the women's 100m hurdles title, Camryn Rogers won women's hammer gold for Canada, and New Zealand's Geordie Beamish stunned Soufiane El Bakkari in men's 3000m steeplechase.

Dame Jessica Ennis-Hill
Three-time world heptathlon champion on BBC TV

Duplantis is such a chilled character. To say nerves never come into play, that's incredible because the adrenaline must have been pumping so hard for him.

Yesterday, Armand Duplantis broke the men's pole vault world record for the 14th time as he cleared 6.30m to claim his third consecutive world title.

Duplantis cleared the record-breaking height on his final attempt, as a captivated Tokyo crowd stayed long after other events had concluded to watch the historic moment.

Gold medal events: 4 - men's high jump, men's hammer throw, women's 1500m, men's 110m hurdles

11:00-12:15 - live coverage on BBC Two, BBC iPlayer and online

12:15-13:00 - live coverage on BBC One, BBC iPlayer and online

13:00-14:45 - live coverage on BBC Two, BBC iPlayer and online

17:00-17:30 - highlights on BBC iPlayer, Red Button and online

19:00-19:30 - highlights on BBC Three & BBC iPlayer

Here's what is coming up on day four (all times BST):

11:35 - Men's 800m heats

11:40 - Women's triple jump qualification

12:36 - Men's high jump final

12:40 - Men's 110m hurdles semi-final

13:01 - Men's hammer throw final

13:07 - Women's 400m semi-final

13:35 - Men's 400m semi-final

14:05 - Women's 1500m final

14:20 - Men's 110m hurdles final

Image source, Getty Images

Hello! Welcome to day four of the 2025 World Athletics Championships.

There's plenty of Brits in action on the track plus gold medals up for grabs in the men's high jump, men's hammer throw, men's 110m hurdles, and women's 1500m, where Kenya's Faith Kipyegon is going for a seventh global gold.

Let's crack on!