Britain's Josh Kerr breaks 27-year-old men's mile world record with time of three minutes 42.66 seconds in front of sold-out 60,000 London Stadium crowd
Keely Hodgkinson holds off Femke Broeders-Bol to win women's 800m in one minute 56.21 seconds
GB's Matthew Hudson-Smith finishes second to American Rai Benjamin in men's 400m
Olympic champion Julien Alfred beats world champion Gabby Thomas to win women's 200m with Dina Asher-Smith fourth and Amy Hunt fifth
Nigeria's Kayinsola Ajayi wins men's 100m in 9.84 seconds from world champion Oblique Seville (9.87) with GB's Romell Glave third (9.97)
USA's Brandon Miller wins men's 800m with GB's Max Burgin third ahead of Olympic champion Emmanuel Wanyonyi
World record holder Armand Duplantis pulls out of men's pole vault with thigh injury
Image source, Getty ImagesA season's best time of 37.95 for the Great Britain quartet, just beating out Australia.
Smooth changes and after a good bend from Zharnel Hughes, Romell Glave makes up a metre or two on the Aussies and powers over the line.
Image source, Getty ImagesCould we see British records in both men's and women's 800m today?
The British men's 800m record is held by Sebastian Coe, who ran 1:41.73 on June 10, 1981, in Florence, Italy.
The British women's 800m record is held by Keely Hodgkinson at 1:54.33, which she set at the Diamond League meeting in Stockholm in June.
Image source, ReutersThe men's pole vault is under way and there is a big cheer at the London Stadium as Briton Owen Heard gets over at 5.45m at the third attempt.
It'll be a little while before we see Mondo Duplantis.
Next up on the track, it's the men's 4x100m relay. There's a GB team and a GB under-20s team in this one.
The Diamond League - athletics' premier one-day meeting series - consists of 15 stops, this year culminating in a two-day final in Brussels in September.
Athletes compete for points across 32 Diamond League disciplines at the 14 regular series meetings in a bid to qualify for the finals.
The top six athletes in field events, top eight in track events from 100m up to 800m, and top 10 in distances from 1500m upwards, will qualify for the finals.
The finals, which precede the inaugural season-ending World Athletics Ultimate Championship, are a winner-takes-all showdown to be crowned Diamond League champion in each event.
Image source, Getty ImagesSuperb performance from Emily Newnham to win the national women's 400m.
It's a personal best time of 50.32 seconds as well, no wonder she gives herself a clap when she spots that.
Lina Nielsen was second, also with a PB, 50.61, with Nicole Yeargin in third.
Duplantis is beaten in the Diamond League for the first time in three years
Swedish pole vaulter Armand Duplantis is a superstar.
The double Olympic gold medallist has reached a point where when he shows up, it's not so much whether he is going to win but whether he might fancy breaking a world record in the process.
However, this year he has proven himself to be human after all.
In his home Diamond League event in Stockholm last month, the 26-year-old was beaten - for the first time since 2023.
He bounced back to win in Paris, saying he "wanted to make a little statement", but does that slip up give the rest of the field a glimmer of hope?
Or are will more likely to see him strive for something special to prove his greatness once more?
Image source, Getty ImagesIt's victory for Jack Higgins in the men's national 800m.
He went out hard, built up a healthy lead but he was clinging on at the end.
Henry Jonas was closing fast but Higgins flings himself over the line to hold on for the win.
Men's pole vault (13:30 BST)
Image source, Getty ImagesArmand Duplantis' only appearance at the London Stadium came at the 2019 World Championships where he finished ninth with a best vault of 5.50m.
He was only 17 at the time.
How high will he go this time?
Coming up shortly, it's the start of the men's pole vault and that means the return to London of a sporting superstar...
A convincing win for Marcel Hug in the men's wheelchair 1500m.
The Swiss legend, 40, led from a long way out and dominated to cross the line in two minutes and 59.24 seconds.
He comfortably held off Australians Samuel Carter and Samuel Rizzo, with Great Britain's Nathan Maguire in fifth.
Could there be another highlight to add to the list by the end of the day?
Women's 800m (15:51 BST)
Hodgkinson beaten by Odira as world record chase continues
After a fantastic indoor season in which she broke the world indoor record in Lievin in February before claiming her first world indoor title in March, the outdoor season has been one of frustration for Keely Hodgkinson.
Those indoor successes raised hopes Hodgkinson, 24, could beat Czech athlete Jarmila Kratochvilova's record time of one minute and 53.28 seconds, set in Munich in 1983.
The Briton improved her national record to 1:54.33 in Stockholm in early June but suffered a shock defeat by Switzerland's Audrey Werro, who ran the third fastest 800m in history to win the race.
Two weeks later, Hodgkinson pulled out of the 400m final at the UK Athletics Championships in tears after feeling "a little hamstring twinge" moments before the race.
After Werro improved her best time to 1:53.80 in Paris, before Hodgkinson, competing with both knees strapped after a heavy fall in training, finished in second place behind world champion Lilian Odira in Eugene.
Asked if the record attempt was still her target on Saturday, Hodgkinson said: "I haven't missed any training. I feel quite good. I'm just taking the pressure off myself because I don't have anything to prove. I don't need to chase anything just because anybody else wants it to be done.
"I'm in really good shape and in a really good place. I think fast times come from great races. If that's Saturday then great, if it's in a few weeks or next year, I don't care."
Dame Jessica Ennis-Hill
Three-time world heptathlon champion on BBC One
From a British perspective we are always quite reserved but Josh Kerr is outspoken, bold and wants to make a statement. It adds pressure saying you are going for a world record, but he thrives in those situations.
Keely is in fantastic shape, she's had a few little blips but the field has moved on as well with some fantastic times. Keely will embrace that, it might have given her a little bit of a knock, but I am excited to see what she does today.
All times BST and subject to late changes.
What action, you ask? Well, here's everything we've got to look forward to for the next few hours...
BBC One
Remember, you can watch all of the action live today and coverage is already under way on BBC One, BBC iPlayer and at the top of this very page.
Image source, Getty ImagesGood afternoon!
It's a big day for British athletics as track and field stars from across the globe descend on the capital for the London Diamond League meeting.
A capacity 60,000 crowd at the London Stadium will roar them on - and the hope is that we might even see a world record or two...
British stars Keely Hodgkinson and Josh Kerr are the headline acts with the latter aiming to break the world mile record and the former closing the show in the 800m.
Hodgkinson has played down her own world record chances but you never know...
