Beef free Ajee Wilson takes out the first heat from the gun. The top three in each race go straight through and she never looks in danger, with Noelie Yarigo working hard to stick with her all the way.

Wilson wins in 2:00.52 - pretty quick - ahead of Yarigo and Egle Balciunaite.

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This World Championships has had its share of shocks but only a fool would bet against Maria Lasitskene claiming gold.The Russian, competing as an independent athlete here, won gold in Beijing two years ago and boasts the top 10 jumps of 2017. The 24-year-old has won her past 22 competitions.

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Next on track is the 800m - South Africa’s Caster Semenya won a surprise bronze medal in the 1500m and can expect to dominate the 800m, in which she is a double world champion.

Also keep an eye on American Ajee Wilson. The 2016 World Indoor silver medallist lost her indoor record after testing positive for banned substance Zeranol ingested through contaminated meat, but escaped a ban. Has now banned beef from her diet.

Katarina Johnson-Thompson has cleared 1.80m - that's as good as it got for her in the heptathlon at the weekend.

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Nothing like setting yourself a target of taking 25 seconds off a PB you just set for confidence!

Eilish McColgan talking to BBC Sport: "I knew today was going to be tough.

"I was ranked seventh in my heat and to get into top five I knew would be tough. I didn't know we were running 15-minute pace.

"I'm so much more confident this year. The training went well and I didn't have injuries that I have had in the past. London 2012 was scary, but I'm older and more mature now.

"I would say a PB would satisfy me in the final. I didn't know it was a 15-minute race. Usually when I run that it's eyeballs out. I'd love to run 14:40 or 14:45.

"Laura Muir and I - we're doing it for Dundee."

Paula Radcliffe
Women's marathon world record holder on BBC Two

Eilish McColgan had a lot of grit there - she was working really hard. That PB will do her confidence a world of good. She wants to knock her mum down the British rankings.

A jump of 1.94m takes you straight through tonight - who sets these marks?! You'll be in with a shout of a medal with 1.94m I would have thought.

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Confirmation that Laura Muir is through to the final as well now. Molly Huddle is also through despite blowing up on that last lap.

Johannes Vetter is not here to play games - he's chucked it over 90m in qualifying to go straight through!

A 91.20m first up.

Brendan Foster
Olympic medallist and BBC commentator on BBC Two

Well done to McColgan. What a battle that was at the end. She had to dig deep and all those years of practice paid off.

What a good run from Eilish McColgan, she has secured a place in the final.

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It was a bold strategy from Molly Huddle to go out so long on your own but she finished in seventh place in the end. Could that still be enough?

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Molly Huddle is caught and passed with 70m to go but Eilish McColgan shows great strength in the last 50m to power through into fourth and qualify for the final.

Letesenbet Gidey wins it. It's a PB for McColgan too, 15:00.38. You can't ask for more than that!

Molly Huddle is caught and passed!

Here comes Sifan Hassan! Into second and steps on the gas. She might catch Molly Huddle. Tough last lap coming up...

Molly Huddle against the clock, it's a time trial. She is starting to slow a touch, she's been out on her own for maybe 12 minutes or so. Last lap!

Brendan Foster
Olympic medallist and BBC commentator on BBC Two

With four laps to go, I think Steph Twell is in trouble. She looks pained in her facial expression.

There is no chance for her unless she gets on the back of that group. She has worked really hard but is paying the price for it.