We are into the business end of the women's high jump - the field are going for 1.97m now.

Britain's Morgan Lake is still hanging on in there.

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

It was Elzan Bibic who stood on the back of Callum Elson, right down the back of his achilles.

Inevitably, when you see a fall then there is a lift in pace - a surge of adrenaline.

Harry Poole
BBC Sport in Glasgow

That looked like a really nasty one for GB's Callum Elson, who pulls up in his 1500m heat to gasps from the crowd and he looks in some discomfort.

That's a real shame for the 25-year-old.

The final heat of a bonkers men's 1500m has concluded.

Vincent Keter of Kenya wins the heat, and is joined in the final by American Hobbs Kessler and Geordie Beamish of New Zealand.

Replays show that Britain's Callum Elson was well and truly caught by Serbia's Elzan Bibic. A really nasty collision, and he's leaving on a wheelchair with blood coming from his ankle.

Oh no! Another British man goes down in the 1500m heats!

Callum Elson looks to be caught on the heel. He hobbles and tries to carry on, but hits the deck in real pain.

His race is over.

Now to the final heat of the men's 1500m. How much more chaos might we see here?

American Hobbs Kessler tops the list of entries thanks to the PB of 3:33.66 he clocked to beat 2022 world champion Jake Wightman in Boston on 4 February.

Callum Elson represents Great Britain.

Dame Denise Lewis
Athens 2000 Olympic heptathlon gold medallist on BBC TV

Yes she can!

Morgan Lake getting the crowd involved, brilliant to watch. She just needed to hold the curve a little bit more for me.

Harry Poole
BBC Sport in Glasgow

Morgan Lake is not allowing the home crowd to relax here.

But she once again turns finger-biting into elation around the arena as she glides over with her final attempt at 1.92m!

Pacing around as she awaited her turn, she didn't allow the reaction to a fall in the 1500m distract her.

If she can win her first global medal after this start, it will be quite something.

Well, some breaking news coming to us now.

Britain's Adam Fogg, who was tripped in the opening stages of his 1500m heat and ultimately finished sixth, has been advanced to the final as it has been decided he was unfairly impeded.

A huge and welcome reprieve for the Brit!

Here comes Morgan Lake, her final attempt at 1.92m... she makes it! She's still in it!

The British hope is hanging on.

Yet more drama on track, yet more falls!

Biniam Mehary, the 17-year-old who set a world U20 record of 3:34.83, is involved in a messy collision and stumbles off track.

The Ethiopian hope is out.

Dame Denise Lewis
Athens 2000 Olympic heptathlon gold medallist on BBC TV

Yaroslava Mahuchikh clears 1.92...

Beautiful jump from the defending champion.

Yaroslava Mahuchikh was the last person to take this attempt in the competition and made it look so easy - such a quality athlete.

Morgan Lake fails with her second effort at 1.92m.

Can the Brit pull it out the fire yet again?

Image source, PA Media

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

Narve Gilje Nordas would have put himself up there as a medal contender, he was able to lift it during the race.

Ryan Crouser has immediately moved to the head of the field in the men's shot put, the American launching a mighty 22.36 metres.

He is the one to beat.

Three more men have just reached the final of the men's 1500m, including Norway’s world bronze medallist Narve Gilje Nordas - who was able to celebrate before crossing the line, so far ahead was he of the chasing pack.

Adel Mechaal of Spain, and South Africa's Ryan Mphahlele also qualify.

Morgan Lake with her first attempt at 1.92m... she can't make it.

Over at that height already are Ukraine’s Yaroslava Mahuchikh, the reigning world champion indoors and out, and Australia’s Olympic silver medallist Nicola Olyslagers.

Image source, PA Media

GB's Adam Fogg, speaking to BBC Sport after finishing sixth in his 1500m heat: "This sport is brutal and I've hit the deck a few times, but when you hit the deck you don’t want it to happen in your first track Indoor World Championships.

"In the first steps I thought I was going to be in a good spot. I went down pretty hard and my shoulder is pretty sore, my hip feels sore, but it is the way it goes.

"The adrenaline got to me, but after you fall down like that you are swamped and you feel worn out straight away - I tried to pull it together, but there is nothing you can really do.

"You hear stories of of people falling and getting through, who knows? I might, we will see.

"I have never not finished a race and I don’t want to start that, this crowd is brilliant and it's great to be running at a home championships.

"Obviously I am not from Scotland, but it's nice to be in the UK."

Come on, keep up, we have another gold medal event to start. The men's shot put finalists are out in the arena.

American Ryan Crouser is the ultimate human cannon but he’s yet to strike gold at a World Indoor Championships. The Olympic and double outdoor world champion threw a championship record in Belgrade two years ago but was eventually beaten by Darlan Romani of Brazil.

In Crouser’s only competition prior to Glasgow, he won the US indoor title with an almighty 22.80m, just two centimetres shy of the world indoor record he set in 2021.

Romani arrives in Glasgow with a relatively modest season’s best of 21.10m but is one of 10 men in the field with a PB beyond 22m.

Leonard Fabbri took silver behind Crouser at last year’s World Championships in Budapest and the Italian has started 2024 with a national indoor record of 22.37m.

Look out too for two-time indoor champion Tom Walsh of New Zealand and Rajindra Campbell, who set a Jamaican indoor record of 22.16m to win in Madrid last weekend.

Britain’s Commonwealth Games bronze medallist Scott Lincoln has been in the winter form of his life, topped by a 21.01m indoor PB four weeks ago.

Harry Poole
BBC Sport in Glasgow

Phew!

Over 1.88m at the last attempt, Morgan Lake lives to fight on at another height.

The crowd really got behind her there, and they're going to be needed again when the British athlete takes a run at 1.92m.

It hasn't been the smoothest of starts, but she delivers when she must to stay in contention.