Not entirely straightforward, but Harry Aikines-Aryeetey is through as the winner of the heat in 10.19. Leading from the gun, H A-A was pressured, to the extent he had a big glance across on 60m.

The fifth and final heat features the third Briton, Harry Aikines-Aryeetey, a live text commentator's nightmare of a name. By the time you've typed that, his race is over. HA-A is in lane one and is the fastest man in the field this season.

Denise Lewis
BBC Sport athletics expert

Image source, Getty Images

"There was no evidence of any niggles there for Vicaut. He looked very good. We talk about rivalries, but the one between him and Lemaitre is the main one. I think this guy has all the hallmarks of taking this 100m title. That was an effortless piece of sprinting there."

"We've seen him battling James Desaolu indoors, where they've both gone sub-6.50. If James is ready and fit it could be an interesting battle between the two of them."

Craig Harper:, external James Dasaolu looked impressive in his heat, easing down at 70m

Image source, Getty Images

Is Vicaut fit? If he's not, I'd love to see him running when's healthy. 10.06 blasts the rest of the field away and is the fastest time of the evening so far. Turkey's Ramil Guliyev, by the way, didn't get the chance to run - he was disqualified for a false start.

Image source, Getty Images

Dwain Chambers on BBC Two: "Going out there in the first round is always a bit nerve-wracking, and I thought 'just go out , and set yourself up'. I'm happy with that. It's good to be in control.

"You don't want to leave with negative thoughts. Our team captain Goldie Sayers asked us 'how would you compete if this was your last race?' It's a great question, and after I thought about it, I came to the conclusion that I'd do it with a smile."

No British interest in heat four, Frenchman Jimmy Vicaut is the one to watch here. He's gone under 10 seconds this season, but hasn't raced since 21 June. Is he fit?

Image source, AP

James Dasaolu on BBC Two: "It was just the heats, you were trying to lose as little energy as possible. I'm just happy to get through. You have nerves, but maybe not as high as the world champs.

"Anything can happen tomorrow, you have to get through the semis then try to push for a medal."

Steve Cram
BBC Sport athletics commentator

"That was a very good first 80m, and then he could afford to turn off from there. It's a nice solid start and he did everything he needed to do."

Image source, AP

My word, that is very impressive from James Dasaolu. The time of 10.22 doesn't tell the whole story, as he was easing up from 80m onwards. By that point, he was well ahead and the rest of the field only came back into the shot because he was slowing down.

Next please. James Dasaolu, the second-fastest Briton of all time, going in heat three. His PB of 9.91 is matched by Dutch athlete Churandy Martina, but Dasaolu's season's best of 10.03 is a whole tenth of a second quicker.

Denise Lewis
BBC Sport athletics expert

"Dwain has the experience and he can navigate the rounds. He knows his competitors and where their strengths and weaknesses are."

Colin Jackson
Four-time European champion and BBC Sport athletics pundit

"Of all the athletes lining up, Dwain's got the most experience. He knows how to save himself to make sure he gives his best as the competition wears on. That was a nice performance and he was able to relax towards the end."

Image source, Reuters

Very good from Chambers, easing through, winning ahead of the German Jakubczyk. A time of 10.18, slowing up as he reaches the line.

Denise Lewis
BBC Sport athletics expert

"Dwain's savouring his athletics now he's coming towards the end of his career. He knows there won't be the next Europeans for him."

Chambers drawn in lane four, the only sub-10 sprinter in the heat. Germany's Lukas Jakubczyk has the best of the season.

Colin Jackson
Four-time European champion and BBC Sport athletics pundit

"Everyone's looking at Christophe Lemaitre, he's the marked man and he's arrived here in good shape."

John McEnerney:, external The 800m should be a cracking battle between Bosse, Lewandowski(2010 Champ) & Mark English, quick times in the heats for sure.

Dwain Chambers on BBC Two:"They're going to pass me one day, but I'm trying to make sure it doesn't happen right now. That's my motivation. Now I'm nearing the end of my career, it matters even more. You can't buy the feeling of competing and I want to hold onto that as long as I can."

Image source, Reuters

Lemaitre, a blur in navy blue, is far enough ahead to jog over the finish line. 10.16 is the time, with Germany's Julian Reus, in good form before this meet, way down. He's through, though, inside the top four that go on to the next round. Dwain Chambers up next.