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

This is going to be a phenomenal and extremely exciting race to watch because there are so many permutations in the way it could pan out.

Josh Kerr has done extremely well to build back from that nasty calf tear. He is a championship performer and he will be relishing racing this field.

Greg Rutherford
Former world and Olympic long jump champion on BBC Two

Josh Kerr is constantly giving off confidence. He believes he can win this.

There's an argument to say that maybe he won't be completely race-ready because he hasn't competed much indoors but, within his ability and his mindset, he is out there to win.

Everything about him is about winning.

Image source, Getty Images

No time to take a breather - it's the men's 3,000m in a few minutes and we've got Great Britain's Josh Kerr in the thick of the action.

Kerr's previous bid for glory on a global stage was wrecked by the calf tear he sustained in the 1500m final in Tokyo.

Just six months later, Britain's 2023 world champion has managed to get himself back into gold medal contention as he seeks to reclaim the world indoor 3,000m title he won in Glasgow two years ago.

"Last time out at the World Championships I dragged myself across the line. Now I'm sitting here having a conversation about going after a gold medal," Kerr told BBC Sport.

"You kind of have to have a short memory span. Once the career's over I can look back and see the amazing moments and the bad ones, and I can appreciate those, but it's just not the position I want to be in right now.

"I just want to go after those big moments for myself and there's a lot of work that goes into that."

Here's a reminder of the British results in the morning session.

Keely Hodgkinson was fastest in the women's 800m in a time of one minute 58.53 seconds, but team-mate Isabelle Boffey missed out on Sunday's final with a finish of 2:01.12 in her race.

Ben Pattison was also unable to make the final of the men's 800m, setting a time of 1:46.85 in a field led by Cooper Lutkenhaus of the United States.

Dina Asher-Smith (7.07) and Amy Hunt (7.15) were fifth and ninth fastest to make it through to the women's 60m semi-finals later tonight.

We've got highlights below, or you can watch reaction from the British athletes in the carousel at the top of this page.

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

Freweyni Hailu will absolutely claim that her fall cost her, and it absolutely did.

I'm not sure she would've had enough to fend off Nadia Battocletti in the form that she has just displayed.

The moment it went out as slow as it did, it was playing into her hands. We know that she can finish quickly and nobody could touch her today.

Hannah Nuttall has not been able to keep pace in the final laps.

Jess Hull is the leader into the final 200m...

Three laps to go.

Frewenyi Hailu has brilliantly got herself back in contention after that heavy fall.

Andrew Cotter
Commentator on BBC Two

The ultimate challenge when you fall down is whether you can get back up and get back into it.

If anyone can, Freweyni Hailu can. She still has time to get back into this.

Hannah Nuttall has kicked and has moved up among the frontrunners!

Can she stay there?

Into the final 1,000m and the pace has kicked up.

The two Brits are at the back of the field and need to find something in the final five laps.

Frewenyi Hailu has fallen, amid a huge amount of pushing and shoving!

Replays show Spain's Marta Garcia nudged Jess Hull into Hailu, who hit the deck pretty hard.

Hailu manages to get up and catch up with the pack, but she will have expended a lot of energy there.

One of the two Ethiopians, Aleshign Baweke, has moved up to the front.

1,200m gone and it is still pretty slow.

Australia's Jess Hull - the only woman racing in both 1500m and 3,000m at this meet - is sat at the back of the field alongside the Ethiopians.

It is a very serene pace so far. Once the back-sitters kick, we should see the pace rapidly increase.

Away they go for 15 laps of this 200m track.

Unsurprisingly it is very crowded out there.

They're lining up on track for the third medal race of the evening, already.

Reigning indoor champion Frewenyi Hailu of Ethiopia is hot favourite, but UK champion Hannah Nuttall has a shot at a medal if she races well here.

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

It has been performance after performance after performance for Simon Ehammer.

He has carried that speed through the whole event and powered the world record home.

I can't explain to you how fatigued you are at this stage, especially knowing a gold medal and a world record are on the line. It is some feat for him.

Image source, Getty Images

We have our first exit, as David Holy of the Czech Republic fails three times at 5.70m. The field of 12 becomes a field of 11.

Mondo Duplantis goes for 5.85m... clears it. By miles.

Josh Kerr, the 2023 world champion and 2024 Olympic silver medallist over 1500m, will attempt to regain the 3,000m title he won in Glasgow two years ago.

The finale tonight at 20.20 GMT is the women's 60m final. Amy Hunt and Dina Asher-Smith will aim to be involved - the semis are at 19.14 GMT.

Hannah Nuttall and Katie Snowden are the first Brits in medal action in the women's 3000m at 18.04 GMT, and Georgina Forde-Wells will go for a triple jump medal.

Steve Cram
1983 1500m champion on BBC Two

Ashton Eaton's world record from 2012 has been taken apart by Simon Ehammer!

He gave himself the chance with the pole vault this afternoon and he takes a personal best in the 1,000m now.