Jemma Reekie and Halimah Nakaayi are leading into the final lap.

Reekie is well placed, although this is a competitive heat.

Jemma Reekie comes in from lane eight to join the pack on the inside of the track.

She has settled into the lead early doors.

Jemma Reekie, who finished fourth in the Olympic final in this stadium three years ago, is another British hope in the women's 800m.

She gets married soon after these championships - will she be able to celebrate qualifying from her heat too?

2019 world champion Halimah Nakaayi of Uganda is the other one to watch in heat five - up next.

Audrey Werro, who beat Georgia Hunter Bell in last month’s Diamond League Final, finishes comfortably to qualify from heat four.

The 21-year-old Swiss athlete eased off and Sage Hurta-Klecker of the United States came up alongside her, with both athletes finishing in one minute 58.43 seconds.

Anna Wielgosz of Poland takes the last qualifying spot from the heat.

The rain has just started falling in Tokyo, and it's quite windy too.

Will that have an impact?

Harry Poole
BBC Sport in Tokyo

How do you celebrate winning a world medal in Tokyo?

You go to karaoke, of course!

That's exactly what Jake Wightman got up to last night to celebrate his 1500m silver.

His song of choice was A Little Respect by Erasure, but unfortunately (and unforgivably?) they didn't have it.

He said there was "a lot of Oasis, some Billy Joel".

"We tried to keep the tempo quite high, because we didn't want any downers when it was a celebration. It was good fun," Wightman said.

Olympic silver medallist Tsige Duguma pushes away in the final 200m to win her heat and qualify for the semi-final.

The Ethiopian looks strong. Her versus Keely Hodgkinson in the final could be quite the event.

Harry Poole
BBC Sport in Tokyo

We have a sell-out crowd tonight, after a couple of nights where the numbers dipped ever so slightly.

It's not difficult to see why when you see the programme - and perhaps they're hoping one star in particular is going to light up the National Stadium.

Sydney McLaughlin-Levrone appeared to absolutely cruise to the seventh-fastest women's 400m time in history in her semi-final, going within 0.69 seconds of Marita Koch's 40-year record time of 47.60.

She is joined by Czech athlete Jarmila Kratochvilova as the only two women to go sub-48 in the event.

Koch's record is controversial, having come in an era when East Germany was known to be systematically doping its athletes, but she never failed a drugs test and has always maintained she did nothing wrong.

And it is under serious threat from the women's 400m hurdles world record holder.

The third heat features Olympic silver medallist Tsige Duguma.

She lowered her Ethiopian record early this year, and is likely to be a primary challenger to Keely Hodgkinson for the gold medal.

Image source, Getty Images

Keely Hodgkinson speaking to BBC Sport after progressing through her 800m heat: "My make-up stayed on! As we all know I don't like the rounds, they feel awful, they are awful. I just really wanted to enjoy being back in the stadium. It's so nice to be here. It wasn't pretty or dominant, but nice to be safely through.

"It's been a long week waiting around, whoever put the 800ms last, thank you. I've been looking forward to getting out here, at one point I didn't even know if I'd be here. It definitely means a lot, round by round I'm hoping it goes my way. It would mean even more than last year, I'm just trying to embrace it all."

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

It's a different stadium [to when Keely Hodgkinson ran in the Olympics in 2021], it's not an empty stadium. It was a different Hodgkinson as well, she was trying to prove herself, now she's coming into this championship with the expectation of everyone already hanging that medal around her neck. It'll do her good to get out and race.

Reigning champion Mary Moraa of Kenya is only the joint-16th fastest runner of the year but is safely through to the semi-finals.She finishes second behind France's Anais Bourgoin, who ran 1:58.43 to win by a hundredth of a second in a curiously close finish.

Back in third, a full two seconds behind, was Slovakia's Gabriela Gajanova.

Remember, the first three in each heat qualify for the semi-finals along with the three fastest non-automatic qualifiers.

After two of six rounds in the men's javelin final, Keshorn Walcott of Trinidad and Tobago leads the way with a throw of 87.83m.

Rivals Neeraj Chopra of India and Arshad Nadeem of Pakistan, world and Olympic champion respectively, are in eighth and 10th place.

Harry Poole
BBC Sport in Tokyo

Like she's never been away, right?

Phase one complete for Keely Hodgkinson, with minimal fuss - just as she would have hoped.

In preparation, coaches Trevor Painter and Jenny Meadows have reduced recovery times between some of Hodgkinson's bigger sessions to try and replicate the demands of getting through the rounds.

I'm not sure she'll need too much recovery time after that. Effortless.

That was like a light evening jog for Keely Hodgkinson. Easing herself through, doing what she needed and not much more.

She'll probably be very pleased with that.

Image source, Getty Images

In a time of 1:59.79, Keely Hodgkinson eases herself into the semi-finals.

Plenty more to come from the Olympic champion.

Halfway point, no dramas for Keely.

She's comfortably in the lead.

Away we go! Two laps of the track.

Keely Hodgkinson, wearing a blue number to mark her status as Olympic champion, has moved to near the front straight away.

The camera focuses on Keely Hodgkinson in her starting blocks. She gives a little wave to the camera.

The small contingent of British fans make themselves heard.