Noah Lyles wins the 200m on a great day for the USA, only Australia's Kelsey-Lee Barber can stop a USA clean sweep.
Team USA wins three of four gold medals on Day 5 - another spectacular day of athletics at Doha 2019.
Find out how it all went down below.
27 Sep - 6 Oct 2019
2019 IAAF World Championships - Doha
Lyles got out well but he had to work so hard, digging deep in the final 20m to work beyond Andre De Grass, Quinonez and Britain's Adam Gemili who finishes just off the podium again.
Gemili led with 40m to go and he's sitting on the track in disbelief, fourth again.
Lyles did what he had to do but it wasn't spectacular, not a world record, but he won't care, he's champion of the world less than a year from the Tokyo 2020 Olympics.
A first world title for Lyles?
The light show is done.
Here we go!
Lyles from DeGrasse!
Drama right at the death in the javelin competition, Kelsey Lee-Barber wins with her 6th and final throw, leaving pre-tournament favourite Liu Shiying in second place.
Lee-Barber's 66.56m launch is a gold medal winning throw.
Silver for Liu who threw a season's best 65.88 on her 5th attempt and thought she had won it.
It's a China 2-3 as Lyu Huihui bags bronze.
It's been another thrilling pole vault final, Kendricks almost went out at 5.87m, clearing it at the third attempt, and needed three tries at 5.97 too, but he sees off the challenge of Mondo Duplantis and Piotr Lisek who take silver and bronze.
A hugely entertaining contest that went back and forth, Duplantis showed what a talent he is on the world stage once again, losing by a single foul.
Both cleared 5.97m.
Donavan Brazier favourite here, and he takes over from Vazquez at the bell, no-one can touch him!
A U.S. record and a first ever USA gold medal in this event, take a bow Donovan Brazier.
Just as he did in the semi-finals, Puerto Rico's Wesley Vazquez broke early, too early, and he runs out of juice, finishing 5th.
Amel Tuka runs a great race, leaving his kick for the right moment, he couldn't catch Brazier but he claims silver.
Bronze belongs to Kenya's Ferguson Cheruiyot Rotich.
Another convincing victory for Britain's 200m hope, she already has a silver medal but can go home with gold in this event.
Starts like a train, wins the race, eases off, totally unflustered.
Asher-Smith clocks 22.16, Dezerea Bryant qualifies in second with 22.56, and Gina Bass is through too with 22.60.
Not quite as fast as her qualifier from the first round when she ran a 22.33 PB, but still impressive, she's first in 22.46.
Second is so close!
Tynia Gaither takes it by 0.01 from Ivet Lalova-Collio.
The Bahaman is through automatically but the Bulgarian will have to wait and see if that time earns her a final spot.
Dina Asher-Smith up next.
Heat 1 goes to Anglerne Annalus, the 22-year-old had to work for it but had that extra bit in her, Swiss runner Mujinga Kambundji secures that second automatic qualifier.
No Elaine Thompson in lane 6 in Heat 2, look out for Brittany Brown.
Stephanie Ann McPherson takes first place with a season's best 50.70, Justyna Swiety-Ersetic is second.
Shakima Wimbley was DQ'd then reinstated but she ran out of gas in the final 100m, finishing.
This has been a great experience for Favour Ofili, the Nigerian 16-year-old born in 2002, she finishes 7th but will take away so much from these Worlds.
But it looks like the final is going to be between Miller-Uibo and Naser.
Here comes Shaunae.
The Rio 2016 champ comes out strong but Jamaican Shericka Jackson has broken and gone for it so early!
Miller-Uibo just goes through the gears, running her own race, glides past Jackson who's flagging, and she's caught by the young American!
The collegiate champ Wadeline Jonathas is only 21 but she runs a much more mature race than Jackson and grabs that second automatic qualification spot.
Jackson should be good with that 50.10 time, but that was a wild run from her.
Miller-Uibo is first with a time of 49.66, no doubt that the Bahaman star is clear favourite, pure elegance in full flight, she looks like she hasn't even hit top speed yet.
Only two automatic qualifiers from these semi-finals.
And the defending champion Salwa Eid Naser goes clear, such a great motion, generates so much power and just eases up down the home stretch.
Naser is first in 49.79.
A season's best for Phyllis Francis in second, 50.22, which puts her in the frame for a podium finish.
Poland's Iga Baumgart-Witan come third but may still make it as one of the fastest outside the top twos.
Ben Broeders clears 5.55m on his final attempt meaning all 12 finalists go through to the next round.
Watch out for those knocked bars - three fouls and you're out.
But the bar goes up to 5.70.
Mondo Duplantis passed on that opening height, and clears 5.70m at the first attempt.
Great composure from the teenager.
Lisek, Kendricks, Braz, Valentin Lavillenie all make light work of that new height.
The motorised bits that get the pole vault bar up to where it needs to be are on a go-slow, one side works, the other doesn't.
Before this little robotic interlude Thiago Braz knocked the bar on his first jump at 5.55m, those faults are important at the end, could be the difference between medals.
German Raphael Holzdeppe cleared that distance with little ceremony, Piotr Lisek and Sam Hendricks are over easily too.
Our first final is the men's pole vault, and it's a deep field.
Defending champion Sam Kendricks is the man to beat, he's the world leader this year clearing 6.06m
But Piotr Lisek and Armand 'Mondo' Duplantis have both cleared six metres in 2019.
Thiago Braz da Silva stunnned the world by winning home gold at Rio 2016 but fell away dramatically after that.
He's rediscovered his form though and brings that air of unpredictability with him.
World record-holder Renaud Lavillenie has a World Championships hex and it struck again in qualifying, not making the final.
Can 19-year-old Mondo Duplantis spring a surprise?
Double men's 800m Olympic champion Rudisha spoke to us about the final tonight:
"The 800m, I can say it is going to be one of the most interesting races tonight. We have strong guys in this final. The very experienced Ferguson Rotich, he has been there for a while. Amel Tuka is in that final."
"The 800m, I can say it is going to be one of the most interesting races tonight" - David Rudisha
"The young upcoming very energetic [Donavan] Brazier from the United States. [Clayton] Murphy is also there so it's going to be very tough and very hard to predict who will win because over the time now there hasn't been any consistency in terms of these guys winning in 800m."
"It can be anybody's race, I can say that."
That's it for the qualifiers, it's business time for the rest of the night.
Here's what's next:
8:05pm - Men's Pole vault final starts (45 minutes from now)
8:50pm - Women's 400m semi-final
9:20pm - Women's Javelin final
9:35pm - Women's 200m semi-final
10:10pm - Men's 800m final
10:40pm - Men's 200m final
Ouch, there's a fall that takes out three at the beginning of that men's steeple chase heat 3, Takele Nigate is in that fall, then he slips and almost goes face first into the water jump.
He soldiers on though, and finishes the race. Legend.
Haha, then the two Kenyans Conseslus Kipruto and Benjamiin Kigen have a conversation coming down the home straight!
Kipruto is really annoyed at something, Kigen laughs it off, calm down son, you're through!
USA's Hillary Bor takes that final auto-qualifier.
Soufiane el Bakkali is favourite in this heat, he's got the fastest time of 2019, but look at Lamecha Girma go!
The Ethiopian takes control with 2k to go, he takes it in 8:16.64.
El Bakkali was right there, staying with the Ethiopian all the way and he looked really comfortable, parking it up in 8:17.96.
Kenya's Abraham Kibiwot grabbed that final auto-qualifying spot.
12 qualifiers are confirmed, Barshim, Ivanuk and Mihail Akimenko are the three to go through with a clean card after four jumps.
Australian Brandon Starc and Cuban Luis Enrique Zayas go through with just the one blemish on the card, China's Yu Wang has had a decent day too.
The final is on Day 8, Friday October 4th, first on the schedule, set that reminder!
The first of three steeple chase qualifying heats goes to Ethiopia's Getnet Wale, Ethiopia have never won a medal in this event at the Worlds, and Wale is out to remedy that.
Wale, the Diamond League champion, goes 8:12.96, France's Djilali Bedrani is second in 8:13.02 and Kenyan Leonard Bett secures that final automatic spot clocking 8:13.07.
There's three through from each heat and the six fastest losers will also make the final.
The final heat goes to Jamaica's Rushell Clayton in 55.23, she was never in doubt.
Pan Am champ Sage Watson from Canada is second, Meghan Beesli and Sarah Carli qualify too.
Group A is done, Group B have just stepped into the circle.
Rio 2016 bronze medallist Wojciech Nowicki from Poland qualifies top with a 77.89m throw, France's Quentin Bigot is just behind him on 77.44.
Spanish athlete Javier Cienfuegos took that third automatic place, writing a 76.90 into the books.
In Group 2 the Polish favourite Pawel Fajdek is chasing his fourth consecutive world title and has just qualified with his first throw!
A 79.24 on his first cast is a statement.
Hungary's Bence Halasz joins him! 76.90 on his first hurl.
Amalie Iuel knocks a Norwegian record in Heat 4, super run from her, 54.72 is the new mark in Norway.
She doesn't have to look far for inspiration after her teammate Karsten Warholm's world beating 400m hurdle show.
And it's a PB for Bahrain's Aminat Jamal, who goes 55.13 and secures second.
Ayomide Folorunso and Ashley Spencer claim a Q each.
Pretty good actually.
The reigning Olympic champ and world record holder Dalilah Muhammad started like a bullet in the women's 400m hurdles Heat 3, the race was well won by the 300m mark, she calms it down and takes it home in 54.87.
Great rhythm and she looks strong.
Sara Slott Peterson held on to second place in 55.28, Q's also collected by Zurian Hechavarria and Joanna Linkiewicz.
Kori Carter, the 2017 champ, pulls up halfway through the second 400m hurdles heat, a real shame.
In her absence, the Ukraine's Anna Ryzhykova tops the heat in 55.11, and 2015 champion Zuzana Hejnova is third.
Disappointment for Carter, but delight for Britain's Jess Turner as she clocks a personal best 55.72 and takes third, Italian Yadisleidis Pedroso claims that fourth Q.
No sign of that ankle injury hampering Qatar's great gold medal hope.
He clears 2.22m effortlessly, joining eight others on three clear jumps.
Barshim goes clear on 2.26m, and the five next jumpers knock the bar at that height.
Ilya Ivanuk joins Barshim in the 2.26m club, great jump from the neutral athlete.
USA's rising star Sydney McLaughlin is up in Heat 1 of the women's 400m hurdles, she won gold at the world youth champs in 2015 and tipped to be the next big thing in U.S. T&F.
And McLaughlin coasts to first.
Great execution, came off that final hurdle so well and finished first effortlessly, despite a little bit of pressure from Switzerland's Lea Sprunger - European champion - who finishes second.
Incredible composure and maturity from McLaughlin, don't forget that she's still only 20.
Star in the making.
Deja-vu? That's because Emmanuel Korir also ran the 800m, but he's pretty good over a single lap too, his personal best is sub-44.
45.08 is enough to take top spot here, great kick in the final 50.
World junior champ Jonathan Sacoor is second, pushing Korir right to the line and GB's Rabah Yousif, is also through to the next round.
Michael Norman is favourite, but plenty of quailty all through the field for the 400m semi-final tomorrow, and the final in Thursday night.
No surprise to see Steven Gardiner in first place in Heat 5.
He coasts through with a big lead, Canada's Philip Osei is second and look out for the third place qualifier Anthony Zambrano.
Colombia's 400m flier was outstanding at the Pan Am Games in Lima in the summer, winning the 400m and anchoring Colombia to 4x400m relay gold too.
He's one of the strongest finishers in the field, an all action, piston pumping runner, he has a kick that even Colombian footballers envy - full of noise when he wins.
Fun to watch at Lima, but can he translate that to the world stage?
Top spot for the favourite Michael Norman, but he had to break a sweat, Jamaica's Demish Gaye is right there with him at the finish line.
Norman goes 45.00, Gaye 45.02.
Botswana's Luengo Scott grabs the other direct route to the next round.
Kerley the name that jumps out of the 400m, but he can only finish second.
Italy's Davide Re pips it at the line, but he's expended an awful lot more energy than Kerley who looked like was out for a jog to pick up the papers.
Qatar's Abbu Ababakar Abbas makes it through on a big day for Qatar's athletes.
Big smiles from Kirani James at the finish line as he finishes first in 44.94s, great to see him back after the year he's had, wracked with injuries and suffering with graves disease.
Grenada's golden boy is back.
World champion in 2011 at 18 and then Olympic champion at London 2012, silver medallist in Rio too, he's world class when he's fully fit.
But is he?
He certainly looked comfortable there, cruised to first place.
Good run too from Julian Jrummi Walsh representing Japan, and Vernon Norwood who snatch qualification in those automatic places.
The top three qualify from each heat here, and Trinidad's Machel Cedenio clocks 45.26 to take the first heat of six.
Jamaica's Akeem Bloomfield and Thapelo Phora from South Africa take the other two automatic spots.
And we're off!
The hammer throw and the men's 400m have just gotten underway.
Oh no, Britain's Colin Hudson-Smith pulls up almost immediately, looks like a hamstring.
Rio silver medallist Mutaz Essa Barshim is favourite to take home some hardware in the men's high jump, but is he fit?
We'll find out soon...
Five Qataris in the mix for medals tonight, can they bring joy to the locals?
Things heating up in Doha, here's what we have to look forward to today:
The spotlight falls on Noah Lyles today after his 19.86 second 200m today - a leading time from this year's leading man.
Touted as a potential successor to Usain Bolt - he has the speed, the smile, and the dance moves - but Lyles is his own man.
“Trying to make a point,” Lyles told Lewis Johnson on Olympic Channel one day after he could only finish second in his first-round heat. “A lot of people thought I was out for the count [after that underwhelming first round run].”
Lyles brought some style to Day 4 on the track, more focused on his running game, less on his Dragon Ball Z-inspired silver hair. He was out to make a statement, and did with that time.
The eight fastest times in this Olympic cycle of the eight men in the final in Doha all belong to Noah Lyles.
Tomorrow is the biggest race of his career, after missing out on Rio in the U.S. trials and missing out the 2017 World Championships after he tore his right hamstring.
In his absence Ramil Guliyev of Turkey took gold in 20.09 seconds, Lyles had run 19.90 in May 2017, the race where he tore that hamstring.
Today is a chance to announce himself on the world stage, minus one year off Tokyo 2020.
Michael Norman is the fastest man in the world over 400m and after he beat Noah Lyles in Rome in the 200m for the first time in four years, there's talk that he could follow Michael Johnson in becoming only the second man ever to win 200 and 400m gold at a single Olympics.
The schedule in Doha makes it impossible to run both, and Tokyo 2020 looks tricky too, but a world championship medal at the 2019 Worlds could give him enough influence to get the timetable changed.
“It’s going to take a very, very, very special person to do something like that,” Norman has said, but a gold medal in the 400m could convince him that he can do it.
We'll see him in the heats today, 4:35pm local time in Doha.
Shaunae Miller-Uibo is the reigning Olympic champ and she looked good yesterday, bossing her heat with very little energy expended.
Look out for her in today's semi-finals at 8:50pm in Qatar.
With medals up for grabs in the men's pole vault, the women's javelin, the men's 800m, and men's 200m, Day 5 is going to bring that wow factor.