The United States lead the way, with Great Britain yet to register and no hopes of collecting a first medal on day three but there's still six more days of action after today,

GB won 10 medals in Budapest two yeas ago to equal their best haul at a World Athletics Championships.

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

Cordell Tinch is tall and rangy. That is a big advantage.

He is silky smooth when he is flying. His technique and rhythm is so smooth and that is what makes Cordell outstanding.

That was only 60% effort from him as well. It is nice when you can just cruise through these first few rounds.

Spain's Enrique Llopis wins heat four by some distance in 13.22 seconds.

China's Zhuoyi Xu is second, USA's Cordell Tinch - who has this year's world-leading time of 12.87 seconds - is third, and Jamaica's Demario Prince is fourth.

Armand Duplantis re-enters the men's pole vault final at 5.85m and, easy as you like, he sails about one metre over the bar.

Sam Kendricks and Kurtis Marschall are keeping pace with the world champion, but Emmanouil Karalis has opted to skip this height.

Harry Poole
BBC Sport in Tokyo

If Mondo Duplantis was any more relaxed, he'd be fast asleep.

When the big screens in the stadium last showed the pole vault star, he was lying on the ground and chilling out, as if he could be anywhere in the world.

He throws in a bit of light activation work and a quick, polite wave to the camera operator before they leave him alone.

Image source, Reuters

Image source, Getty Images

Great Britain's Tade Ojora speaking to BBC Sport after missing out on qualifying for the men's 110m hurdles semi-finals: "That did not go not the way I was hoping.

"I expect better from myself. I am so disappointed and have a lot of emotions to process.

"I expected that getting through was a given. It should have been easy for me to get through. My warm-up was good and I felt good so I don't know what happened."

Joy for the home fans in Tokyo as Shusei Nomoto clinches fourth place!

Heat three is won by Jamaican champion and Olympic finalist Orlando Bennett (13.20 seconds), with France's Just Kwaou-Mathey and Italy's Lorenzo Simonelli rounding out the qualifiers.

We've got a nice story developing.

Abderrahman Samba of Qatar won his 400m hurdles heat a little earlier on, and now his brother, Seifeldin Heneida Abdesalam, is impressing in the men's pole vault final.

The 20-year-old set two personal bests in qualifying to reach the final, and now he has just passed over 5.75m at the second attempt.

Image source, Getty Images

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

Jason Joseph is so far down during the race but then he is the strongest finisher in the world. He is very rhythmical.

He has won European Indoors before so he can get out when it is necessary. He is far more experienced now that he is a little bit older.

Switzerland's Jason Joseph, France's Wilhem Belocian, and USA teenager Ja'Kobe Tharp are separated by just two thousandths of a second in heat two.

Senegal's Louis Mendy takes the final automatic qualifying spot but Great Britain's Tade Ojora can only finish eighth.

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

Dylan Beard is going to have to improve his start. He got himself into the set position very late.

The timing and rhythm was good but he will need to step up on his time. He will manage that in the semi-finals to get a tenth of a second down.

These hurdles are unforgiving and if you hit, then you suffer.

USA's Dylan Beard races through heat one in first place, with a time of 13.28 seconds.

China's Yuanjiang Chen and France's Sasha Zhoya take second and third, with Brazil's Thiago dos Santos sneaking fourth after fading in the second half of the race.

As in the 400m hurdles, it's the top four in each of the five heats, plus the four next fastest non-automatic qualifiers who'll advance to Tuesday's semi-finals.

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

Cordell Tinch does not have a whole lot of experience in big occasions like this whereas Grant Holloway does. That counts for a lot

You can perform your best all season but other factors come into play when you are at a World Championship and Grant Holloway knows how to handle that.

Image source, Getty Images

Can Grant Holloway turn his form around?

The American hurdler has won the last three world championships in this event along with the Olympic title in Paris, but has had a difficult year. The 27-year-old came last in his opening Diamond League race in China, fifth in his next outing in Paris and has lost to fellow Americans in his two subsequent international races.

He may have opened the door for two team-mates - Cordell Tinch, 25, and Ja’Kobe Tharp, 19. Tinch is the joint-fourth fastest sprint hurdler in history, but missed out on selection for last year's Olympics at US trials. Tharp, junior world champion last year, won the national title in June.

Meanwhile last month Rachid Muratake became the first Japanese athlete to break 13 seconds in the 110m hurdles, while Tade Ojora lines up for Great Britain in heat two.

Update from the men's pole vault final.

Armand Duplantis decided to enter at 5.55 metres and easily sailed over the bar, but is skipping 5.75m.

His main rivals Emmanouil Karalis - who skipped the first height - Sam Kendricks and Kurtis Marschall have all passed 5.75m with minimal fuss.

Turkey's Ersu Sasma has already been eliminated after failing to make it over 5.55m

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

Ezekiel Nathaniel looked very strong.

A lovely controlled race all the way around. He kept completely focused. A little bit of a technical struggle on hurdle eight which he may want to look at.

He is looking very promising.

BBC iPlayer

Four world champions are set to be crowned in this session and we'll be on hand to make sure you don't miss any of the action.

You can also tune in to BBC One now before coverage moves to BBC Two from 13:00-14:45. You can watch live on BBC iPlayer or by clicking the link at the top of this page.

If you do miss any of the key moments, the daily highlights show will be available to watch on BBC Three, iPlayer and Red Button from 19:00 BST.

Make that two Brits in the men's 400m hurdles semi-finals!

Alastair Chalmers burst into life in the second half of the race to take fourth place in 48.86 seconds.

Nigeria's Ezekiel Nathaniel wins the final heat in 48.37 seconds with USA's Caleb Dean and Brazil's Francisco dos Reis Viana in second and third, respectively.

Image source, Getty Images

Great Britain's Seamus Derbyshire, speaking to BBC Sport after finishing sixth in his heat: " It was not my best. It's not the time to mess up, I'd be lying if I said I was very happy with my performance but I've had so much growth this year. I didn't think I'd still be in the sport 12 months ago. It's going to be a good platform "

Image source, Getty Images

That didn't look an easy race for anyone!

Olympic champion Rai Benjamin of USA takes the fourth heat in 48.15 seconds. Emil Agyekum of Germany is second in 48.33 with Victor Ntweng of Botswana taking third and Gerald Drummond of Costa Rica fourth.

Great Britain's Seamus Derbyshire misses out on a place in the semi-final despite his dances moves before the race. The 25 year-old has gone viral on TikTok for his start line gestures but sadly he does not advance any further.

Just one more heat to go.