Well, that's all for the track events in Tokyo.

Gold medals are still up for grabs in the women's high jump and men's discus, but the rain is delaying the field events.

So, there's no Great Britain, no Jamaica, no Italy, and no South Africa - all of whom featured on podiums at major championships in 2023 or 2024.

You'd expect the gold medal battle to be between defending champions USA and Olympics champions Canada, but this rain could level the playing field.

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

That's not a nice statistic [first time with no GB relay medal since 2003].

We understand championships are tough You come in with injuries and lots of things happen along the way and the pressure, but we have always won medals in the relay.

I don't know if it's down to structuring of the team, the members, the staff, the funding - there's so many different parts and I'm sure GB will go away and look at this.

The concluding race of the championship will be missing some of its biggest names - and we aren't totally sure yet of everyone who will take part.

Jamaica, who had individual 100m champion Oblique Seville in their ranks, dropped the baton in their heat to miss out on the final.

And a similar fate befell the British team as Eugene Amo-Dadzie blundered and set off too early for his handover, leaving Jona Efoloko stranded with the baton.

Italy have been disqualified from the men's 4x100m final for infringing South Africa, who were unable to finish their heat.

The South African team were given a second chance at reaching the final through a solo run this morning - but they fell short of the target time and were knocked out all over again.

The overwhelming favourites will be the USA, who progressed with ease and still have 200m champion Noah Lyles to add to their ranks.

Image source, Getty Images

Well, we aren't sure when the field events will resume. So now our focus turns to the final race on the trck at these championships...

A word for the great Shelly-Ann Fraser-Pryce. Her silver here is her 25th across Olympic Games and World Championships.

A three time Olympic champion, a 10-time World gold medallist. One of the very, very best to ever do it.

Image source, Getty Images

So, Great Britain will head home from the World Championships with five medals:

Silver

• Jake Wightman (men's 1500m)
• Amy Hunt (women's 200m)
• Georgia Hunter Bell (women's 800m)

Bronze

• Katarina Johnson-Thompson (women's heptathlon)
• Keely Hodgkinson (women's 800m)

GB were right in medal contention at the half-way mark - Amy Hunt, brought into the team for this final, ran a storming second leg.

But a poor handover between Desiree Henry and Daryll Neita for the final leg cost GB dear, it allowed Germany to overtake them and Neita couldn't make up the ground.

Sums up the championships for Britain.

The USA win their third successive world title in the women's 4x100m, just ahead of Jamaica who sent Shelly-Ann Fraser-Pryce into the sunset with a silver.

Bronze for Germany, edging out the Brits. So that's no medals from the relays at all for GB. Very disappointing.

The USA are seeking a hat-trick of world titles.

Jamaica are powered by the emotion of Fraser-Pryce.

And Britain have a strong team.

Who will take the gold?

We'll know in a minute...

Harry Poole
BBC Sport in Tokyo

Image source, Getty Images

Well, what an honour it is to be here as Shelly-Ann Fraser-Pryce brings the curtain down on her career.

Can she do so with global medal number 25?

The tributes have been flooding in throughout the championships, including from eight-time Olympic champion Usain Bolt.

Although he has nothing but respect for his compatriot, his one complaint is that Fraser-Pryce has kept going long enough to make him look bad, eight years after he retired aged 30.

"There are no words to explain how great Shelly-Ann is," Bolt told BBC Sport.

"She's a legend in my book, she has proven again and again that she is one of the best in the world.

"She left, had a kid, came back to the sport and still dominated. I'm happy to know and to see this greatness."

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

Amy Hunt is going to elevate the team and she's coming off a great high from that 200m [silver medal].

They ran really well in qualifying, they're looking strong and we've not got a gold medal yet. I'm not putting too much pressure on and I'm not going to jinx it but I hope this 4x100m women's team can step up here.

Fair to say it was mixed fortunes for Britain in the 4x100m relay heats on Saturday...

As the rain picks up again in Tokyo, the women's high jump final has been paused just as we approached the conclusion.

No action in the men's discus either, which had not resumed after the first delay.

But on the track, the relays will continue...

Image source, Getty Images

Great Britain's Dina Asher-Smith, Success Eduan, Desiree Henry and Daryll Neita qualified for the women's 4x100m relay with a good showing in Saturday's heat.

The team has been changed for the final though, with world 200m silver medallist Amy Hunt coming for Eduan as she eyes a second medal of the week.

They won silver in Paris last summer, and the nations they finished on the Olympic podium alongside - USA and Germany - will likely provide the stiffest opposition again.

Image source, Getty Images

We're down to the final three in the women's high jump.

Favourites Nicola Olyslagers (Australia) and Yaroslava Mahuchikh (Ukraine) - who passed at 2m after failing her first attempt - are joined by Poland's Maria Zodzik, who cleared the height at the final attempt.

What a time to produce a personal best. She's guaranteed a medal.

It has not been as successful a day - or a championships - as we would have hoped from a British perspective.

But the GB team did pick up two medals earlier in a dramatic 800m...

GB's Toby Harries speaking to BBC Sport after finishing sixth: "The shoes are heavy from the rain so it's always going to be a little slower but I think, we're born and bred in this, we're British we have to deal with rain so in a way it benefits us.

"But today we just weren't good enough. We'll suck it up and next year we'll be back in that medals table."