Back on the track and we're ready to go in the women's 200m.

It's a stacked field including Saint Lucia's Julien Alfred, Gabby Thomas of the US and British stars Dina Asher-Smith, Amy Hunt and new national champion Success Eduan.

Steve Backley
Two-time world and Olympic javelin silver medallist on BBC One

We saw Armand Duplantis was nursing a thigh injury and his dad, and coach, looked concerned. He has done the sensible thing by calling it a day. You can't beat injury.

Disappointing news from the men's pole vault - Olympic champion Armand Duplantis has withdrawn.

He was struggling with a thigh issue after clearing 5.95m and is not going to take any chances with the European Championships less than a month away.

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

Kayinsola Ajayi kept a cool head. He respects the fact the world champion is right next to him but he manages to hold his position so nicely.

Steve Cram
BBC athletics commentator

He looked across to the world champion as if to say 'is that all you have got?!'

Kayinsola Ajayi is the coming man.

Image source, Getty Images

Nigeria's Kayinsola Ajayi wins in 9.84 seconds!

He equals his own national record and turns and celebrates in the face of world champion Oblique Seville in the lane next to him.

Seville was second in 9.87 and it's a good run from Great Britain's Romell Glave to take third.

A personal best of 9.97 for Glave, who also anchored the relay team to victory earlier.

Here comes that men's 100m final then.

British trio Zharnel Hughes, Jeremiah Azu and Romell Glave go in this one.

Will any of them cause a bit of a stir and beat Jamaica's world champion Oblique Seville?

Image source, Getty Images

Women's 100m Olympic champion Julien Alfred and men's 100m world champion Oblique Seville are also in London today.

Alfred comes into the meeting in blistering form having set the third-fastest women's 200m time in history of 21.51 seconds in Monaco last weekend.

The Saint Lucian will take on American Gabby Thomas, who denied her a sprint double at the Paris Olympics, as well as British stars Dina Asher-Smith, Amy Hunt and new national champion Success Eduan over 200m at 15:15.

In the men's 100m at 15:04, world champion Seville of Jamaica faces Botswana's Olympic 200m champion Letsile Tebogo, American world indoor champion Jordan Anthony, African record holder Kanyinsola Ajayi and the British trio of Zharnel Hughes, Jeremiah Azu and Romell Glave.

• LIVE - men's pole vault
• LIVE - women's high jump
• LIVE - women's long jump
• 15:04 - 100m men
• 15:15 - 200m women
• 15:26 - 400m men
• 15:36 - Emsley Carr Mile
• 15:51 - 800m women

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

Image source, Getty Images

It's a real blessing to have Ja'kobe Tharp here. He makes little adjustments during the race which allow him to unleash his power and keep the pace on. That's what most other athletes struggle to do.

What Tharp has I don't think you can train to be honest. It's just the way his body works naturally, which is a huge help in this event.

Steve Cram
BBC athletics commentator

Another excellent performance from Ja'kobe Tharp. He is still just a junior and he just seems to make it look so easy.

His start isn't the best part of his race but he just doesn't let it bother him.

The world record holder gets the win!

Just 20 years old but Ja'kobe Tharp is on top of the world right now and crosses the line in a meet record of 12.89 seconds.

The American starts well and then pulls away.

Cuba's Kendry L Menendez is second in a PB of 13.01 with Trey Cunningham of the US third.

We may have a reason for Armand Duplantis' slight struggles as he is down receiving some treatment on his thigh.

We'll see how that affects him for the rest of the day.

For now, it's over to the men's 110m hurdles with the USA dominating the field.

It's Ja'kobe Tharp, who set a new world record last month, who is the man to beat in lane four...

Steve Backley
Two-time world and Olympic javelin silver medallist on BBC One

Normal service resumes for Armand Duplantis but a low-key reaction to clearing 5.95m.

He is having some heavy strapping put on his thigh. Perhaps that explains things?

Image source, Reuters

After a big celebration from Sam Kendricks of the US as he clears 5.95m in the men's pole vault, it's over to Mondo Duplantis.

He failed to clear 5.85m but moved up anyway... and comfortably gets over 5.95.

Much more muted reaction from the double Olympic champion.

Steve Cram
BBC athletics commentator

Jessica Hull kicked hard away but well done Hannah Nuttall. We know Hannah has got pace and she had a go. Laura Muir also ran a season's best.

It's an Australian one-two in the women's 3,000m.

A huge season's best of 8:24.69 from Jessica Hull, who takes the win, with Rose Davies second in personal best time of 8:25.38.

Ireland's Sarah Rose, in third, and Britain's Hannah Nuttall in fourth, also registered PBs.

Image source, Getty Images

It was a thrilling finish to the women's discus throw, where it went down to the very last throw.

Cierra Jackson was up and produced a personal best 71.72m to edge out her fellow American Valarie Sion and Netherlands' Jorinde van Klinken.

Image source, Reuters

Of course, when talking of world records, you can never discount Armand Duplantis.

The Swede had been resting up after clearing 5.60m at the first attempt, skipping 5.75m... but his first attempt at 5.85m was unsuccessful.

It'd be a shock if he didn't clear this but then it's a bit of a surprise he didn't manage it first time.

He couldn't really be beaten twice in three Diamond League meets, could he?

Steve Cram
Former mile world record holder on BBC One

Josh's training has been phenomenal and has added to the expectation he can do this.

Any world record is hard to break and this one has stood for a very long time, but he's in the shape of his life and let's hope he can join a very exclusive club to do it.