So that's the end of the action on day one of the 2025 World Championships.

Let's take a look at what happened:

• Beatrice Chebet won the women's 10,000m, with Great Britain's Megan Keith and Calli Hauger-Thackery in 10th and 11th respectively.
• Great Britain's 4x400m mixed relay team finished fifth, with the United States taking the title ahead of the Netherlands.
• Ryan Crouser took the men's shot put title, with Great Britain's Scott Lincoln in fifth, while Evan Dunfee of Canada and Maria Perez secured the men's and women's 35km race walk competitions.
• All the favourites and every British athlete progressed through the men's and women's 100m heats, with the semi-finals and final to come tomorrow.
• Great Britain's Jazmin Sawyers went out in the women's long jump qualification, while repeat record breaker Armand Duplantis of Sweden progressed in the men's pole jump.

If you're a night owl then the women's marathon starts at 23:30 tonight, while you can join us tomorrow for those 100m finals, plus medal events in the women's discus and long jump, plus the men's 10,000m final and plenty more heats and qualification.

That all gets going from 10:00 BST - we'll see you then.

Harry Poole
BBC Sport in Tokyo

I don't need to ask what you'll be doing with your Sunday afternoons after this, do I?

A big change made to the schedule - one World Athletics president Sebastian Coe says was discussed at length - is to hold both the men's and women's 100m finals on the same night at these championships.

Not only that, but they will start just seven minutes apart.

It promises to be a blockbuster conclusion to night two that you do not want to miss, with the semi-finals coming up just after midday in the UK.

Based on the atmosphere we've witnessed tonight, it could be very special.

Jenny Meadows
Former 800m World Championship medallist on BBC One

If we look at the four athletes who ran for Great Britain and Northern Ireland, none of them are in the individual 400m competition.

Our three women and three men have chosen to focus on their individual races which is obviously fair enough, but they will be disappointed with being 0.23 seconds away from a medal.

Lewis Davey speaking to BBC Sport after Great Britain finished fifth in the mixed 4x400m relay final:

"Not so great, it was a similar situation to this morning's run. I haven't been able to find my rhythm and I made it much harder for the team."

Emily Newnham:

"I feel like there was two ways I could have looked at this championship. One was to focus on the hurdels, the other was to get as much experience and soak up what I can, and get on the track as many times as possible. I'm grateful for that opportunity. I know I'm stepping into a team that is so established, so I'm grateful and happy."

Toby Harries:

"Horrible legs! I'm a 200m and 400m guy, so if I'm going to overtake it's in the first 200m. I had a lot of work to do, I got the baton in fifth. We're here to win medals, we're GB, we're not here to just compete. I went out as hard as I could to try and hold it. I just didn't have that end-game. Still, a 42.2 split was better than this morning. I wish I could have held it that last 30, 40 metres a bit more.

Nicole Yeargin:

"My split wasn't what I wanted it to be, I was a bit slower than this morning. I should have had more confidence in myself to overtake on the back stretch - I thought I could ride and pick it up, but I realised that's not how this works.

"She [Femke Bol] knows she can close hard, I think they just kept that steady speed. I should have trusted myself and overtaken her when I could. I almost tripped her, clashes spikes, I hope we do better in the men's and women's relays."

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

Great Britain will obviously come away disappointed. We perhaps hoped they might have been a little bit more in the mix than they were. It felt like they had dropped quite far behind at some stages, Tony Harries had to work quite hard on his leg and we saw him go out very fast.

Overall it was a very tough race. The Netherlands and United States were so far ahead. They were fantastic and there were some huge times ran there, so it was always going to be difficult.

I do feel there is some disappointment there for Great Britain, they could've performed slightly better.

Colin Jackson
Two-time world 110m hurdles champion on BBC One

We did say this was going to be an electric final after the qualifying rounds.

United States certainly stepped it up to take that gold medal. We were in hope that Great Britain could just magic something up, but there were just so many strong runners. The Netherlands worked so well as a team and delivered their performances.

A great race - this is what we like to see.

Stef Reid
British para-athlete & Paralympic bronze medallist on BBC One

This is the third global championships in a row where Ryan Crouser has come in, it hasn't been an easy ride and he's still been able to find a way to win.

He has to be the most efficient world champion ever. He has literally participated in one competition this season.

It's all over in the men's shot put final, with Ryan Crouser of the USA winning with a throw of 22.24 metres.

Uziel Munoz of Mexico and Leonardi Fabbri of Italy take silver and bronze, while Great Britain's Scott Lincoln finishes seventh with a throw of 21.00m.

Things would have had to have gone horribly wrong for the United States to not win that, and they did not - they take the gold.

Netherlands, who finish with Femke Bol, take second, with the Belgium third and Great Britain coming home in fifth.

No medal on this occasion for the British quartet.

Here comes Toby Harries!

The British athlete burns up the field towards second in the first half of the first lap, then fades somewhat as we come into the final changeover.

United States still with a huge lead.

Onto the second lap and the athletes slot into the inside lane.

The United States lead by a large distance, with Poland in second.

Here we go then!

It's a strong start from Poland in lane eight, as the athletes come round on the first lap.

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

There were a lot of questions around whether the mixed relay is a good addition, but over the past few years we've seen that it is a great way to start the World Championships. Great Britain are doing fantastic in this event, so we definitely want to see it keep going!

The United States and the Netherlands obviously have very strong teams, but Great Britain are looking great. I'm excited to see what they can produce here and hopefully they come away with a medal.

Image source, Getty Images

We're on to the last final of the day - the mixed 4x400m relay.

This promises to be another thrilling battle for gold.

The USA are reigning champions and clocked the fastest time in the heats, but Femke Bol - who was rested in the heats - will be looking to inspire Olympic gold medalists the Netherlands to victory.

Don't overlook Great Britain though - they won silver at the 2023 World Championships and ran a national record for Olympic bronze last summer.

Lewis Davey, Emily Newnham, Tony Harries and Nicole Yeargin are the Brits in action.

Image source, Getty Images

Serial world record breaker Armand Duplantis has made his way through qualifying in the men's pole vault with little fuss.

5.75m was the mark ultimately required to reach Monday's final, some way short of 6.29m record he set in Hungary last month.

Paula Radcliffe
Former women's marathon world record holder on BBC One

Wow. Wow. Wow.

Nadia Battocletti was working hard, you could tell that by the way she made Beatrice Chebet almost look human. As Chebet was pulling away, she was holding on and holding on. That elastic between them took a while to snap.

Chebet really is one of the greatest that we've had the privilege of being able to watch.

World record holder and reigning Olympic champion Beatrice Chebet is now the world champion!

Defending world champion Gudaf Tsegay looked to break away with a few laps remaining - she even produced a 62 second lap - but it wasn't enough and she was hauled in.

The final straight is a two-horse race between Chebet and Nadia Battocletti. The Italian pushes Chebet all the way, but Chebet holds her off to take gold.

Tsegay has to settle for bronze, while road world record holder Agnes Jebet Ngetich comes fourth - what a race!

Great Britain's Megan Keith finishes in a very respectable 10th place, with Calli Hauger-Thackery in 11th.

We're into the final two laps of the women's 10,000m final, with defending world champion Gudaf Tsegay in the lead - here we go!

Image source, Getty Images

After three throws, Britain's Scott Lincoln currently sits in seventh place in the shot put final with a best effort of 21.00m.

American Ryan Crouser, seeking his third straight world title, leads with a throw of 21.99m.

Harry Poole
BBC Sport in Tokyo

Lewis Davey, Emily Newnham, Tony Harries and Nicole Yeargin have been confirmed as Great Britain's mixed 4x400m relay quartet before that final in less than an hour's time.

They'll be hoping to continue their nation's relay success at recent global championships, after GB made the podium in every relay event at the Paris 2024 Olympics.

They also won four relay medals at the previous World Championships, and could get Great Britain off to a great start with a medal on day one in Tokyo.