Wow!

Defending champion Fred Kerley is in trouble after finishing only third.

What was his time?

Oblique Seville won that one impressively in 9.90.

Image source, Getty Images

Now for the third and final semi-final.

Defending champ Fred Kerley is in lane four, Jamaica's Oblique Seville seven and Britain's Reece Prescod eight.

Harry Poole
BBC Sport in Budapest

A false start in a major championships race featuring Zharnel Hughes? That was terrifying for a split second as the TV cameras here initially followed the Briton in the aftermath of Akani Simbine's error.

As hinted in yesterday's hints, it is the start which is threatening to cost Hughes here.

We know he can't get out as quick as others due to his height but there's a lot of room for improvement there if he can get that right in the final.

And that is the main thing. Hughes, the fastest man in the world this year (have we mentioned that one yet?) has given himself a shot at a first individual global medal.

Image source, Getty Images

The wry smile on Zharnel Hughes' face suggests he knows that was not his best.

Jamaica's Ryiem Forde was third and, sadly for Great Britain, has nudged Eugene Amo-Dadzie out.

Ferdinand Omanyala hangs on to one of those two fastest loser spots for now.

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

Hughes cannot leave himself with so much work to do at the end of the race because there's going to be people who are as fast as him.

Steve Cram
Athletics commentator on BBC TV

Zharnel Hughes knows that he cannot leave these men too far ahead.

Eeeek.

That's not the best Zharnel Hughes will run but he manages to recover from a bad start to take second behind American Christian Coleman, who ran a season's best 9.88 seconds.

Take two.

Keep your nerve, Zharnel...

Akani Simbine has gone over to look at the replay screen with the officials. I assume he wants to be allowed to run under protest but it seems he has accepted his fate.

He applauds to the crowd before disappearing into the bowels of the stadium.

False start!

South Africa's Akani Simbine is the guilty party.

Watch out for 2019 world champion Christian Coleman in this semi-final alongside Zharnel Hughes.

Hughes, in the purple and blue kit of Great Britain, is in lane seven.

He needs to finish in the top two to go through automatically.

Harry Poole
BBC Sport in Budapest

Wow, that's a statement from Noah Lyles.

The American LOVED that run and almost added another 100m on in celebration, drawing admiration from the crowd.

He delivers a season-best 9.87 seconds, having predicted he'll run that rapid 9.65 in the final.

That's a fine showing from Eugene Amo-Dadzie, who has given himself a chance as he enjoys himself in the 'q' room. As many suspected, Marcell Jacobs is just not fit enough to compete.

Can Zharnel Hughes respond to that performance from Lyles? Most importantly, just get yourself into tonight's showpiece, please Zharnel.

Image source, Getty Images

Abdul Hakim Sani Brown finished a surprise second in that first semi. He goes through to tonight's final at 18:10 BST.

Next up is Zharnel Hughes...

Ferdinand Omanyala was only third with Eugene Amo-Dadzie behind him in fourth.

They both have a nervous wait in the Q room with the two fastest from each semi-final plus the two next fastest going through.

Olympic champion Marcell Jacobs is out despite a season's best of 10.05 seconds.

Image source, Getty Images

Steve Cram
Athletics commentator on BBC TV

Lyles has talked about how good he can be here. We know he's favourite for the 200m, but he wants to show what he can do in the 100m.

Britain's Eugene Amo-Dadzie dipped for the line in 10.03 seconds.

I'm not sure he made it.

Noah Lyles that is very impressive! The 200m man flies to victory.

It's tight behind him.

Ferdinand Omanyala and Marcell Jacobs could both be out...

Image source, Getty Images

Harry Poole
BBC Sport in Budapest

A massive noise greats the athletes contesting this first men's 100m semi-final.

Looking at the start lists, you just can't call this at all.

Noah Lyles, Marcell Jacobs, Ferdinand Omanyala and British interest in Eugene Amo-Dadzie all in the first race of the evening session! Superb.

The crowd are pumped. The athletes are ready.

I just feel sorry for those sat on the opposite side of the stadium from me, feeling the full force from the sun. They're all fiercely waving paper or whatever they can get their hands on to cool themselves down.

The flying accountant Eugene Amo-Dadzie looks relaxed.

On your marks...

Dame Jessica Ennis-Hill
London 2012 Olympic heptathlon champion on BBC TV

I think you need these open rivalries, it's good for the sport. You need these different personalities.