Puerto Rico's Jasmine Camacho-Quinn set an Olympic record of 12.26 seconds in the semi-finals.

Could she set a new world record here?

That's a record held by the American beside her in lane four, Keni Harrison.

Harrison will be seeking to claim the USA's fourth victory in this event in five Olympics.

There's one more final to come in this morning's session at the Olympic Stadium in Tokyo.

Don't be falling asleep on us just yet - that's coming up next!

Steve Backley
Two-time world javelin silver medallist on BBC TV

That's enormous! Tentoglou saved his best for this final round. He needed to tidy it up and he has. Fantastic jump from the Greek athlete.

American JuVaughn Harrison can't deny Eusebio Caceres the bronze.

Next up it's Greece's Miltiadis Tentoglou for his last chance of getting a medal...

That's huge!!

A jump of 8.41m puts him into the lead, ahead of Juan Miguel Echevarria on his second-best jump.

That means Echevarria just needs to beat the Greek's second best jump of 8.15m for gold.

Now then!

A final jump of 8.18m takes Spain's Eusebio Caceres into third.

Four left to jump, with two of those men now behind the Spaniard and out of the medals.

The men's long jump final is reaching its conclusion.

Juan Miguel Echevarria remains on course for gold, with Maykel Masso in second and Greece's Miltiadis Tentoglou still in third.

Six left to jump, as Sweden's Thobias Montler steps up...

It's long! But it's not going to count - failure by the smallest of margins. Five remain.

Olympic champion Hannah Mills is aiming to retain her title and win gold in Tokyo, but she is also on a mission to help the environment by taking on a plastic pledge.

Great Britain’s Mills and Eilidh McIntyre are first after eight races, with two races to go before the all-important medal race on Wednesday.

They'll be back in action at 04:05 BST this morning.

Another gold for Mills to add to the one she won with Saskia Clark in 2016 and her London 2012 silver would make her the most successful female sailor in Olympic history

Cuba remain on course for a one-two in the men's long jump final, with Juan Miguel Echevarria in pole position ahead of Maykel Masso.

Greece's reigning European indoor and outdoor champion Miltiadis Tentoglou has been pushed out of third place as he prepares for his fifth attempt...

It's good, and a jump of 8.15m moves him back into bronze position.

The one moment of real drama on the track so far on day 10 saw world champion Sifan Hassan floored with 400m remaining in her 1500m heat, before storming to victory with a rather impressive final lap.

The seventh and final women's 200m heat sees the USA's Jenna Prandini finish first in 22.56 seconds, ahead of Gambia's Gina Bass and Australia's Riley Day.

The semi-finals take place from 11:25 BST today.

A best throw of 71.34 metres and 14th place will not be enough for GB's Taylor Campbell in hammer qualification.

But compatriot Nick Miller has made the Olympic final following the conclusion of Group B qualification.

We're midway through the fourth round of attempts in the men's long jump final.

And it's Cuba's Juan Miguel Echevarria who still leads the way with his third jump of 8.41m.

Compatriot Maykel Masso is in silver position, with Greece's Miltiadis Tentoglou third.

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

That's all we can ask for from Beth Dobbin - get through, qualify.

The semi-final draws will be very, very interesting because we've got some of the fastest women in the world finishing lower down the field...

Just the five to run in Beth Dobbin's 200m heat, with the top three to qualify...

And it's job done for Dobbin!

The 27-year-old places second in 22.78 seconds, behind Canada's Crystal Emmanuel but ahead of Jamaican Elaine Thompson-Herah who eases through to the semi-finals in 22.86.

Steve Cram
Athletics commentator on BBC TV

Shericka Jackson was almost just jogging round - what on earth? Why take such risks? I'm sorry to sound exasperated but I am, on her behalf, on her coach's behalf and her team-mates. It's just not necessary.

Image source, Getty Images

Great Britian's Beth Dobbin is about to take to the track for her 200m heat.

Jamaica's 100m Olympic champion Elaine Thompson-Herah joins her on the start line.

Meanwhile, on closer inspection, it appears compatriot Shericka Jackson will miss out on the final following her performance in that last heat. Wow...

Well then!

A bit of a shock there, as Jamaica's Shericka Jackson finishes outside the top three to put her chances of progressing in doubt.

Anthonique Strachan of the Bahamas wins heat five in 22.76 seconds, but Jackson's time of 23.26 could have put her in real trouble.

Argentina strolled into the last four of the women's hockey tournament with a straightforward victory over a disappointing Germany.

Augustina Alberttario and Victoria Granatto scored late in the second quarter to put the South American side in charge and Valentina Raposo's clinical strike from a penalty corner in the final quarter settled the match.

It was 18-year-old Raposo's second goal in the tournament, in her eighth international appearance.

Argentina's Maria Sussi made an incredible triple save late on to deny the Germans a consolation.

Image source, Getty Images

Jamaica's Shericka Jackson, who completed he country's clean sweep of the medals with bronze in the 100m final, is the standout name in heat five.

Then, in heat six, it's Beth Dobbin's turn.