Britain's Morgan Lake has begun her bid for a high jump medal.

She failed in her first go at 1.84 metres, but made it at the second attempt.

Image source, PA Media

And indeed, Ackeem Blake delivers. The man who finished just 0.01secs behind Noah Lyles in Boston last month wins his semi-final in 6.51.

Cameroon's Emmanuel Eseme joins him, finishing second despite being very slow out of the blocks.

Here's semi number two.

Jamaica's Ackeem Blake is the man to watch.

Harry Poole
BBC Sport in Glasgow

Very different approaches going on in terms of how the women's high jumpers prepare to get their medal bids under way.

While Morgan Lake had been undertaking some active stretching, Ukraine's reigning world champion indoors and outdoors Yaroslava Mahuchikh has her eyes closed as she lies down on her mat, uninterested in the chaos around her.

Not even Christian Coleman whizzing past close by at a blistering pace earns a reaction. She looks very, very relaxed.

Noor Vidts may have just sewn up her second successive world indoor pentathlon gold.

She tops the long jump with a distance of 6.50m, well ahead of nearest contender Saga Vanninen on 6.41m.

Missed it? Or want another look?

Here's how GB's Georgia Bell qualified second fastest for Sunday's 1500m final.

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

They have to look when the world record holder is about to take to the track!

After cruising a 6.49secs time earlier on a lot of eyes were on him, it was a tremendous start from him and Hansen the Dane.

Out of the blocks Coleman drives well, he's switched on and focused.

The top two in each semi reach the final later tonight, plus the other two fastest qualifiers.

Henrik Larsson of Sweden and Markus Fuchs of Austria are the men watching on nervously in those two non-automatic qualifying spots, after semi one.

Blink and you miss it!

Christian Coleman blitzes the field with a time of 6.43secs. Noah Lyles, watch out!

Chituru Ali of Italy joins Coleman in the final with 6.53, a personal best.

Image source, PA Media

Steve Cram
Athletics commentator on BBC One

Christian Coleman looked very good this morning.

His fastest ever time is 6.34 and he looks good, he'll be trying to keep out the noise from his teammate [Noah Lyles]!

At the same time, the women's high jump final is about to start.

Britain's Morgan Lake got a huge ovation when introduced to the Glasgow crowd.

Time for the semi-finals of the men's 60m.

USA's Christian Coleman is the man to watch in semi-final number one...

Harry Poole
BBC Sport in Glasgow

Most people in the arena felt that one. Ouch!

Ireland's Sarah Healy was so close to the finish line but a matter of metres out her legs completely gave way as she was caught by the chasing pack.

She hit the track with quite a thud, but looks to be OK, albeit a bit shell-shocked.

We saw a couple of dramatic falls at the World Championships in Budapest, Sifan Hassan and Femke Bol both suffering similar fates. Hopefully Healy can brush that one off...

With the conclusion of that last heat, Georgia Bell qualifies second fastest for the final. Exciting.

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

On Abigail Pawlett's first jump...

Really good approach and Pawlett has settled herself into this competition.

Using her running speed, in-and-off the board - looking good.

Image source, Reuters

A big jump by Noor Vidts, 6.40m, in her second attempt at the long jump. Could that put her on course for a second successive world indoor gold?

Abigail Pawlett of Britain faulted in her second attempt.

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

There was panic in Sarah Healy's eyes when she came into the final straight.

What messed up the race was Birke Haylometh was not right, she was slowing it down too much - falling asleep at the front.

Healy went too hard and perhaps, too early.

Image source, Reuters

Agathe Guillemot of France, Ethiopia's Birke Haylometh and Lucia Stafford of Canada were the top three in the final women's 1500m heat, and so progress to the 12-strong final.

Sarah Healy felt she was caught by Haylometh before tripping in the final couple of metres, but it wasn't deliberate and contact was minimal.

The final women's 1500m heat has just concluded - and in dramatic fashion.

Ireland's Sarah Healy was right in contention and led into the final stages, roared on by a sizable fan base in Glasgow, but was caught on the home straight by three competitors.

She then stumbles and hits the floor just short of the line! It doesn't look like she was tripped, more that she was simply exhausted.

Saga Vanninen, who led the women's pentathlon going into the evening session, has no-jumped in her second attempt at the long jump.

The Finn jumped 6.19m in her first attempt - one centimetre shorter than Noor Vigts, her nearest rivals.

Such tight margins...

Here's how Femke Bol laid down a marker to the rest of the women's 400m field on Friday morning - while Laviai Nielsen also impressed.

The semis are later tonight.