World Athletics Championships - as it happened

What a day for Shara Proctor. She rewrote the British athletics record books as she became the first British female long jumper to go over 7m, as she claimed a silver medal.

Getty ImagesCopyright: Getty Images

So one of the most dramatic moments of the day came in the 200m when Dafne Schippers won the gold.

The Netherlands sprinter became the third fastest in the 200m with her winning time of 21.63 seconds.

BBCCopyright: BBC

So Great Britain have today picked up their fourth medal of the World Championships with Shara Proctor winning a silver in the women's long jump.

Lorraine Ugen (fifth, long jump), Tiffany Porter (fifth, women's 100m hurdles) and Dina Asher-Smith (fifth, women's 200m) will be ruefully thinking of what might have been.

BBCCopyright: BBC

What a night in Beijing. The new women's 200m world champion Dafne Schippers is understandably a little bit happy as she talks with BBC Sport's Phil Jones.

"Wow. It's crazy. A European record. I'm the world's best. Wow. Crazy. I'm so happy," screams a very-excited Schippers.

That was about the gist of it. Schippers' time of 21.63 seconds was the third best of all time. Only Florence Griffith-Joyner (21.34 in 1988) and Marion Jones (21.62 in 1998) have gone quicker.

Getty ImagesCopyright: Getty Images

American Christian Taylor, who has just collected his triple jump gold, has had a busy night in Beijing as he also was cheering on training partner Shara Proctor, the Briton who took silver in the women's long jump.

"There were some mental hurdles Shara had to get over and she really dialled into that," said Taylor. "I was just telling her to be in that moment and build off the energy. It's a special night and you don't often get this opportunity.

"Up to the fifth last jump she was in the number one spot. But it only takes one performance and someone else can take that gold. Unfortunately she just lost out but it's a new national record."

BBCCopyright: BBC

Great Britain's Commonwealth and European 400m silver medallist Jodie Williams writes on twitter.

PACopyright: PA

Quote Message: I didn't execute my race, I kind of pressed towards the end. It's definitely a missed opportunity and I'm really disappointed. As a competitor at this level you know when it wasn't a clean race and when you messed up. It's 10 barriers, you have to execute every one cleanly and I didn't. It's one of those events where you have to learn and grow, I'm going to come back stronger next time. from Tiffany Porter on BBC Radio 5 live Fifth in the women's 100m hurdles final

I didn't execute my race, I kind of pressed towards the end. It's definitely a missed opportunity and I'm really disappointed. As a competitor at this level you know when it wasn't a clean race and when you messed up. It's 10 barriers, you have to execute every one cleanly and I didn't. It's one of those events where you have to learn and grow, I'm going to come back stronger next time.

Quote Message: I have to say it - Tiffany Porter felt the pressure. You're not there until you cross the line. That medal was thrown away.

I have to say it - Tiffany Porter felt the pressure. You're not there until you cross the line. That medal was thrown away.

Quote Message: I'm very disappointed. You go out there to do your best, I tried my best, it didn't happen so I have to congratulate the ladies who medalled. I made a lot of mistakes. from Britain's Tiffany Porter Fifth in the women's 100m hurdles

I'm very disappointed. You go out there to do your best, I tried my best, it didn't happen so I have to congratulate the ladies who medalled. I made a lot of mistakes.

Two hundredths of a second separate Tiffany Porter from a bronze medal.

BBCCopyright: BBC

Quote Message: "It was an incredible performance by the other Europeans in the race. It was always going to be a blanket finish so it was no surprise to see it. Porter should not have tried to correct her line. In a straight race if you're not impeding anyone you won't get disqualified for leaving your lane. The fact she tried to check herself, cost her the bronze medal."

"It was an incredible performance by the other Europeans in the race. It was always going to be a blanket finish so it was no surprise to see it. Porter should not have tried to correct her line. In a straight race if you're not impeding anyone you won't get disqualified for leaving your lane. The fact she tried to check herself, cost her the bronze medal."

Quote Message: Agony. If that was the World Indoor Championships over 60m we'd be looking at a British winner. Tiffany Porter started over striding, losing momentum and the rest of the field engulfed her and spat her out. That is agony. I can feel the pain.

Agony. If that was the World Indoor Championships over 60m we'd be looking at a British winner. Tiffany Porter started over striding, losing momentum and the rest of the field engulfed her and spat her out. That is agony. I can feel the pain.

One of those sisters, Danielle Williams, has the Jamaican flag in her hands. She wins gold.

It is a finish that will haunt Tiffany Porter. The Briton was leading with two hurdles to go, she mistimes it, loses her line and misses out on a medal by the narrowest margin. She falls over the line and crumples in a heap.

She ends up face down on the track and when she looks up she sees that the scoreboard has her in fifth position.

Getty ImagesCopyright: Getty Images

There are two sisters in the women's 100m hurdles final. With Danielle and Shermaine Williams running for Jamaica.

For Britain, Tiffany Porter has a chance of gold, but her younger sister Cindy Ofili has to watch from the sidelines after failing to make it through her semi-final.

Quote Message: Russia are having a pretty dismal champs but that man Shubenkov has just made them smile. I must admit I did not see that one coming, he looked good through the rounds but all eyes were on David Oliver. But he clattered the hurdle with his lead leg and that ruined his chances. Everyone was hoping it could be a Hollywood blockbuster for Aries Merritt but to finish with a medal is just unbelievable. He will always smile and come over and chat. I touched his shoulder and he's got almost no muscle definition, he's so skinny, because of his kidney problems. You just hope and pray everything goes well with his operation. He is a beautiful hurdler.

Russia are having a pretty dismal champs but that man Shubenkov has just made them smile. I must admit I did not see that one coming, he looked good through the rounds but all eyes were on David Oliver. But he clattered the hurdle with his lead leg and that ruined his chances. Everyone was hoping it could be a Hollywood blockbuster for Aries Merritt but to finish with a medal is just unbelievable. He will always smile and come over and chat. I touched his shoulder and he's got almost no muscle definition, he's so skinny, because of his kidney problems. You just hope and pray everything goes well with his operation. He is a beautiful hurdler.

It is a frantic session at the Bird's Nest stadium. Tiffany Porter goes in the women's 100m hurdles final shortly. But firstly, some more analysis on the men's 110m hurdles.

Quote Message: This is my fifth World Championships and I knew I had to compete. I feel like a winner, I don't care about the colour of the medal. I was told I might not be strong enough. I'm here, I conquered. from Shara Proctor on BBC Radio 5 live

This is my fifth World Championships and I knew I had to compete. I feel like a winner, I don't care about the colour of the medal. I was told I might not be strong enough. I'm here, I conquered.

They started the competition slowly but it has got better for the American team. Their national anthem is ringing around the Bird's Nest stadium as Christian Taylor is presented with his medal. He produced the second-longest jump in history of 18.21m to take his second world title.

Great Britain's Jonathan Edwards hung on to his world record. But only just.

EPACopyright: EPA

Ed Allchorne: Aries Merritt medals in the high hurdles with a dodgy kidney. Incredible stuff.

ThinkBig33: Still can't get over Aries Merritt being a week away from a kidney transplant and winning bronze!

What a time to run a personal best. Russia's Sergey Shubenkov goes under 13 seconds for the first time in his life.

And it is good enough to take the gold medal. He wins it in 12.98 seconds, with Jamaica's Hansle Parchment second and American Aries Merritt, who will be having a kidney transplant on Tuesday, picking up a bronze medal.

Getty ImagesCopyright: Getty Images

Candice Bryan:  The beautiful Dina Asher-Smith just gets faster and faster! Great talent!

Chris Gunn:  Asher-Smith just makes me smile when she's talking. Just seems like a genuine person.

AFPCopyright: AFP

Quote Message: "I'm over the moon. To be in a race of that standing, 21.63 seconds is ridiculous. I didn't know those times existed. I gave it my all. I always run better when relaxed so I tried to have fun. I'm happy to run a personal best and British record in a world final. I can't ask for any more. I didn't imagine I'd be coming fifth in the world, any time. It was amazing to be part of such a brilliant race." from Dina Asher-Smith finished fifth in 22.07secs

"I'm over the moon. To be in a race of that standing, 21.63 seconds is ridiculous. I didn't know those times existed. I gave it my all. I always run better when relaxed so I tried to have fun. I'm happy to run a personal best and British record in a world final. I can't ask for any more. I didn't imagine I'd be coming fifth in the world, any time. It was amazing to be part of such a brilliant race."

"As for Dina, she'll go back to uni and they'll all be talking about what we did over the summer...'yes I broke two national records'. If you didn't know Dina you do now - and she is going to be around for a long, long time."

It is set to be an emotional night on the track as American Aries Merritt competes for the last time in the 110m hurdles, before he undergoes a kidney transplant on Tuesday.

"I am here in Beijing for mental sanity more than anything," said Merritt. "I don't want to be sitting in my house cooped up in bed waiting for surgery."

Getty ImagesCopyright: Getty Images

"Arsenal supporters may want to throw all their weight behind the beefy frame of reigning champion David Oliver, a huge Arsenal fan as well as an extremely nice man.

"Everyone else will be struggling not to root for Olympic champion Aries Merritt, who has revealed that he not only has a rare kidney disorder but is booked in for a transplant immediately after these championships, his sister being the donor."

This is how Dafne Schippers won the women's 200m title in a thrilling finish.

BBCCopyright: BBC

Quote Message: I feel like I have just run a 400! I can't even speak right now. I'm just happy right now. I was happy with 7.07 but I was still ready to compete. I was on crutches for four weeks this time last year. Thanks to my coach, I know I'm a lot to deal with, and there is more to come - that's for sure. from Britain's Shara Proctor Silver medallist in the women's long jump

I feel like I have just run a 400! I can't even speak right now. I'm just happy right now. I was happy with 7.07 but I was still ready to compete. I was on crutches for four weeks this time last year. Thanks to my coach, I know I'm a lot to deal with, and there is more to come - that's for sure.

Quote Message: Thank heavens Shara Proctor got out of the pit with a big grin on her face - you've just broken the British record - and it took Bartoletta, the champion from 10 years ago, to jump 7.14. Shara pushed her all the way - what a performance.

Thank heavens Shara Proctor got out of the pit with a big grin on her face - you've just broken the British record - and it took Bartoletta, the champion from 10 years ago, to jump 7.14. Shara pushed her all the way - what a performance.

So this is how it finished in the women's long jump final.

BBCCopyright: BBC

"Schippers took it to a whole other level. We knew she had the strength, we knew that would be telling over the 200m and she has claimed that crown."

Dafne Schippers has just become the third fastest women's 200m runner of all time. What a performance. Jamaica's Elaine Thompson narrowly misses out on the gold medal, losing the race in the closing stages as she is out-sprinted by Schippers.

Getty ImagesCopyright: Getty Images

Tianna Bartoletta's late, late jump of 7.14m takes the gold medal in dramatic style

Shara Proctor has set a new British record with an effort of 7.07m but she has to settle for a silver medal.

Tianna Bartoletta of USA has just gone ahead in the final round of the long jump. She records a jump of 7.14m. Shara Proctor is denied a gold medal.

Getty ImagesCopyright: Getty Images

What a finish. Netherlands' Dafne Schippers, who finished second in the 100m, takes the gold medal in the women's 200m.

Great Britain's Dina Asher-Smith sets a new British record of 22.07 but finishes out of the medal positions, coming fifth.

AFPCopyright: AFP

Getty ImagesCopyright: Getty Images

Here we go for the women's 200m final.

PACopyright: PA

Speaking of the women's long jump, Katarina Johnson-Thompson has just been talking to BBC Sport. And the 22-year-old is devastated after only coming 11th in the final.

Quote Message: It's such an amazing competition and I crave events like this. I'm really disappointed not to be in the final eight but I gave everything I could. I don't know why this has been sent to test me, this has been one of the worst weeks of my life, but hopefully I can bounce back next year. from Katarina Johnson-Thompson 11th in the women's long jump final

It's such an amazing competition and I crave events like this. I'm really disappointed not to be in the final eight but I gave everything I could. I don't know why this has been sent to test me, this has been one of the worst weeks of my life, but hopefully I can bounce back next year.

Final jump from Lorraine Ugen and it is a big no-jump. She is fifth, but team-mate Shara Proctor is still in gold-medal position.

AZ Potts:  It's ladies day at the world championships! @dinaashersmith#proctor#ugen

Quote Message: Dina Asher-Smith has got a real chance but don't add too much pressure on those young shoulders. She won her semi-final so has a good lane in the final. I'm just wondering if the competition has taken too much out of her. If she gets on that rostrum today it will be well deserved.

Dina Asher-Smith has got a real chance but don't add too much pressure on those young shoulders. She won her semi-final so has a good lane in the final. I'm just wondering if the competition has taken too much out of her. If she gets on that rostrum today it will be well deserved.

"Britain's Dina Asher-Smith - the 'Dasher' nickname being the best athletics example of nominative determinism since Bulgaria's Vania Stambolova stumbled over a hurdle at London 2012 - came to Beijing just hoping to make the World 200m final, yet after successive PBs goes into that showdown as a very real contender for a medal.

"While Jamaica's Elaine Thompson may be marginal favourite and 100m silver medallist Dafne Schippers will be closing like a Dutch express train in the last 50m, the 19-year-old history student has a chance - and as someone who admits to loving the nerves that come before a race, she will relish every 22-point-something seconds."

Next up for Great Britain is 19-year-old Dina Asher-Smith in the women's 200m final. She has been hugely impressive so far in Beijing. Will she claim a medal?

Shara Proctor is having a great time out there. She goes over seven metres again for the second time in 30 minutes after no British female had ever done so before. Her effort of 7.01m is not as good as her previous attempt of 7.07m, which still leads the competition.

APCopyright: AP

Ashton Eaton was in the lead after four events in the men's decathlon. He is now even further ahead after a fantastic run in the men's 400m event. A time of 45.00 as he leads the field by a long way. It is the fastest ever 400m time in the decathlon.

He screams out with arms outstretched as he crosses the line. He picks up 1,060 points to go with the 3,643 he had already earned. He leads by 173 points over Damian Warner. A good first day for American Eaton, who is finished for the day and comes back tomorrow with a large lead.

So in our vote the majority of you decided that the British gold medal tally after today would be five.

But we have just seen Shara Proctor break the British long jump record, we have Dina Asher-Smith going later in the 200m and Tiffany Porter in the women's 100m hurdles final, so might it be six? Stay tuned...

This is how it stands after four events of the men's decathlon. The 400m is the last event today, before the remaining five events take place on Saturday.

BBCCopyright: BBC

Getty ImagesCopyright: Getty Images

The first events in the men's decathlon have been taking place earlier today. American Ashton Easton ran the fastest ever decathlon 100m at the World Championships to take the lead after four events on day one of the competition.

The Olympic champion ran 10.23 seconds to win the 100m and followed it up with a winning long jump leap of 7.88m.  

But his lead was of 3.643 points was cut by 56 points after Damian Warner of Canada had a season-best 2.04m in the high jump.

Easton's fashion sense was also turning head in the Bird's Nest. He sported some interesting head gear, which is apparently a prototype cooling hood to help the world champion recover between events.

Getty ImagesCopyright: Getty Images

Quote Message: Proctor has seized this moment, she gave everything to that jump. She got it and she can't believe it.

Proctor has seized this moment, she gave everything to that jump. She got it and she can't believe it.

It may be all over for Katarina Johnson-Thompson, but Shara Proctor has just produced something sensational.

Her third jump of the final sees her go to 7.07m, a new British record and she leads the competition.

She waited to see the distance and is absolutely delighted, bouncing around on the track.

Will that be the jump that sees Great Britain win their fourth gold medal of this World Championships?

Getty ImagesCopyright: Getty Images

Mark Taylor:  All this sympathy for KJT. Just no bottle. How long is she going to be afraid of a red flag. Just go for it girl.

James Stevenson:  Disappointment for KJT again. But the good thing with her is you can say with some confidence we haven't seen her best yet.  

Quote Message: She'll learn, I genuinely think this lady has too much talent to walk away from the sport. She will come back a medallist soon.

She'll learn, I genuinely think this lady has too much talent to walk away from the sport. She will come back a medallist soon.

BBCCopyright: BBC

Quote Message: I think it is really evident that she is carrying scar tissue and who wouldn't after such an awful experience for someone so young. I am sure she came into the competition and expected to get through to the final eight, but it was not meant to be.

I think it is really evident that she is carrying scar tissue and who wouldn't after such an awful experience for someone so young. I am sure she came into the competition and expected to get through to the final eight, but it was not meant to be.

The pain continues for Katarina Johnson-Thompson. She misses out on a medal in the long jump. Two efforts of 6.63m, with a no jump in between, sees her down in 11th place out of 12 finalists.

As mentioned, only the top eight go on to have three more jumps. She looks close to tears as she can only sit and watch from the sidelines.

What a horrible World Championships for the 22-year-old.

Getty ImagesCopyright: Getty Images

Lord Sebastian Coe has been talking to BBC Radio 5 live. And he loved the men's 1500m semi-finals, as you would expect given he won two Olympic titles over the distance...

Quote Message: You might as well have lined them up over 200 metres. Basically sprint speed is always going to matter. Chris made the right move at the right time, Charlie ran a superb race. It's high speed chess, the 1,500m, always figuring out what's going on five strides down the track, particularly when you're in traffic. This is the world of difference between a one-day meet and having to think your way through the rounds. from Lord Sebastian Coe IAAF president

You might as well have lined them up over 200 metres. Basically sprint speed is always going to matter. Chris made the right move at the right time, Charlie ran a superb race. It's high speed chess, the 1,500m, always figuring out what's going on five strides down the track, particularly when you're in traffic. This is the world of difference between a one-day meet and having to think your way through the rounds.

Shara Proctor has just jumped 6.87m in the long jump before Lorraine Ugen's effort of 6.73m with her third jump. Only the top eight go through to have three more jumps. Katarina Johnson-Thompson is 11th after her first two jumps. She needs to improve with her next jump or is out.

Quote Message: Charlie Grice is always learning, he's always picking Steve Cram's brains. He's coached by Jon Bigg, Sally Gunnell's husband, so I know she shares her experience from the highest level.

Charlie Grice is always learning, he's always picking Steve Cram's brains. He's coached by Jon Bigg, Sally Gunnell's husband, so I know she shares her experience from the highest level.

Quote Message: I knew how hard it would be, the hardest thing is getting through the heats so I am happy to make the final. This year I have been finishing high in all my races so I am getting tactically better. Unfortunately Chris O'Hare did not make it, it would have been nice to have two in the final. Anything can happen now, if I find myself in the right position. from Britain's Charlie Grice, who qualified fourth fastest for the 1500m final

I knew how hard it would be, the hardest thing is getting through the heats so I am happy to make the final. This year I have been finishing high in all my races so I am getting tactically better. Unfortunately Chris O'Hare did not make it, it would have been nice to have two in the final. Anything can happen now, if I find myself in the right position.

Worrying times for Katarina Johnson-Thompson. She fouls on her second attempt. British team-mate Lorraine Ugen recorded a jump of 6.85m on her second go, but it will not be enough for a medal.

Quote Message: That was an impressive run by Charlie. He did absolutely everything right. It was a much quicker heat than the other semi-final. He held it together and it was a very mature performance. It was a comfortable qualifying time and he is living at the top level these days.

That was an impressive run by Charlie. He did absolutely everything right. It was a much quicker heat than the other semi-final. He held it together and it was a very mature performance. It was a comfortable qualifying time and he is living at the top level these days.

Quote Message: These guys had the sense to look at the qualifying times from the previous heat and did start to wind this up. A great run from Charlie Grice just outside his personal best, looking strong. Sometimes the gods give you blessing and that was by far the easiest of the semi-finals. Charlie Grice has just made his first world final, this is a career that is going to get better and better.

These guys had the sense to look at the qualifying times from the previous heat and did start to wind this up. A great run from Charlie Grice just outside his personal best, looking strong. Sometimes the gods give you blessing and that was by far the easiest of the semi-finals. Charlie Grice has just made his first world final, this is a career that is going to get better and better.

It is good news, bad news for Great Britain. Charlie Grice comes fourth in the second semi-final to move into the final. But it is a fast semi-final, so Chris O'Hare does not secure one of the two fastest loser spots and is out.

So Chris O'Hare is left sweating on the second semi-final. Charlie Grice of Britain is in contention.

PACopyright: PA

Quote Message: Nick Willis swept by the field but Chris O'Hare made a valid move, he gave himself the best opportunity to progress so hard lines for him.

Nick Willis swept by the field but Chris O'Hare made a valid move, he gave himself the best opportunity to progress so hard lines for him.

Quote Message: I felt good at the bell, felt fine until 100m to go but my last 50m was rubbish, I am really disappointed, I wanted to do a lot better than that. It's horrible to come here and run like a donkey. It is a big year next year and hopefully I can run better than that. from Chris O'Hare, who came seventh in his 1500m heat

I felt good at the bell, felt fine until 100m to go but my last 50m was rubbish, I am really disappointed, I wanted to do a lot better than that. It's horrible to come here and run like a donkey. It is a big year next year and hopefully I can run better than that.

BBC SportCopyright: BBC Sport

Chris O'Hare punches the track in frustration. It will be a cruel way to miss out on the final if he fails to get there.

He was third with 300m to go, second with 80m left before a flurry of bodies go past him on the line. He comes seventh. Only the top five qualify automatically, as do the two fastest losers.

There is a slight hope for O'Hare, but he is furious with himself.

After what has happened in the heptathlon, you can understand why Katarina Johnson-Thompson plays it safe. She decelerates into the board, taking off 21cm short of it and records a distance of 6.63m. It probably won't be anywhere near enough for a medal but an early loosener.

It is fast and frantic in the Bird's Nest stadium. Great Britain's Chris O'Hare and Charlie Grice will race in the men's 1500m semi-finals at 12:55 BST.

Getty ImagesCopyright: Getty Images

The athletes then have to go through a bizarre routine where they all have to line-up one in front of each other and smile for the camera. Well, some smile, some look extremely focused. But it is thumbs up from Katarina Johnson-Thompson.

Lorraine Ugen is first up. But her first attempt is red-flagged. That looked a long jump of around 7m but she was 1.9cm into the plasticine.

AFPCopyright: AFP

As well as Katarina Johnson-Thompson, the British record holder Shara Proctor is also competing in the long jump final.

But she will have to better her qualifying jump of 6.68m, well short of her best of 6.98m.

And competing the British trio is Lorraine Ugen, who impressed with a jump of 6.87m in qualifying.

"There is one clear favourite for this: USA's Tianna Bartoletta, world champion aged 19 a decade ago and the only woman in the field to go past seven metres this summer. 

"But her best is only 14 centimetres longer than the British record that Shara Proctor set a month ago, and 20cm better than Proctor's GB team-mate Lorraine Ugen has jumped this year.

"With Katarina Johnson-Thompson also looking to make up for her heptathlon disappointment last weekend, a British medal is a real possibility."

"I've had to sit and live with my thoughts for the last few days so it has been hard. When people were nice to me that's when I started to get upset."

It has been a tough week for Katarina Johnson-Thompson, but the crying could soon be replaced by celebrations.

She is among the 12 competitors in the long jump after her second jump of 6.79m, following a first attempt of 6.54m, saw her qualify in fifth position.

"I'm very grateful to be able to represent the country in the long jump as well as the heptathlon, so I have a chance to rectify my mistake," she said.

This was the screensaver that Great Britain's Katarina Johnson-Thompson used for motivation following her disqualification from the long jump in the heptathlon on Sunday, that ended her chance of a medal in the event.

Katarina Johnson ThompsonCopyright: Katarina Johnson Thompson

But the extra motivation has done the trick as the 22-year-old jumped 6.79m to qualify for the long jump final at 12:50 BST.

She will be joined by Brits Lorraine Ugen, who impressed with a jump of 6.87m and Shara Proctor who qualified in eleventh place with 6.68m.

Another faller in the third semi-final. Croatia's Andrea Ivancevic is on the deck, before America's Brianna Rollins goes on to restore some national pride by winning the third semi-final.

BBCCopyright: BBC

Aaron York:  How can you not know the false start rule?

GB:  This 1 false start rule continues to be ridiculous, you want to see people win 4 being the best not thro DQ

Britain's Goldie Sayers is out of the javelin after fouling on her final attempt.

Her furthest throw of 58.28 won't be enough to make the final.

Getty ImagesCopyright: Getty Images

Quote Message: Beautiful, absolutely beautiful. I'm sure she will find something wrong with it but she did the job. She wasn't pushed but she has impressed me, much more like the Tiffany Porter that won bronze at the 2013 World Championship and she will take much confidence from the fact Harper-Nelson and Harrison are now out."

Beautiful, absolutely beautiful. I'm sure she will find something wrong with it but she did the job. She wasn't pushed but she has impressed me, much more like the Tiffany Porter that won bronze at the 2013 World Championship and she will take much confidence from the fact Harper-Nelson and Harrison are now out."

Perfect from Tiffany Porter, who wins the race and the Briton is into the final, which comes up later at 14:35 BST.

Cindy Ofili is cheering and applauding from the sidelines. A job well done from Porter.

BBCCopyright: BBC

The gun goes but it is a false start from American Kendra Harrison. She stands there waiting for confirmation. And the dreaded red and black card comes out. She is gone. Off goes Harrison, muttering to an official.

She doesn't seem to think she's done anything wrong but she was definitely the first to move. She also didn't know what the black and red card meant. But it means the end of her hopes.

A terrible few minutes for American sprint hurdlers.

So little sister has had her go, and now it is her big sister, Tiffany Porter, who aims to book her place in the final.

Getty ImagesCopyright: Getty Images

Quote Message: She didn't hit it with her lead leg she hit it with her trail leg and the weighting of the hurdle sent her crashing to the floor. from Allison Curbishley BBC Radio 5 live summariser

She didn't hit it with her lead leg she hit it with her trail leg and the weighting of the hurdle sent her crashing to the floor.

Quote Message: It wasn't my race today. l wanted to make the final but I will take the experience, it has been a long season and is a big learning curve. I am just happy to be here, it is a blessing to compete against the best girls and be in front of this crowd. from Cindy Ofili, who finished sixth in her heat in 12.91 seconds

It wasn't my race today. l wanted to make the final but I will take the experience, it has been a long season and is a big learning curve. I am just happy to be here, it is a blessing to compete against the best girls and be in front of this crowd.

BBC SportCopyright: BBC Sport

Not the start Goldie Sayers is after in the women's javelin qualification. She records a throw of 58.11m with her second throw after 58.28m with her first attempt. She needs a better third round or is heading home early.

BBC SportCopyright: BBC Sport

Quote Message: Goldie will have to go back to what she has done in the past ,she has thrown the British record before here in this stadium. She has had problems with her right knee, which is important as it is all about throwing with the legs. She will need to improve on that.

Goldie will have to go back to what she has done in the past ,she has thrown the British record before here in this stadium. She has had problems with her right knee, which is important as it is all about throwing with the legs. She will need to improve on that.

This is how Dawn Harper-Nelson's medal hopes ended in dramatic style.

BBC SportCopyright: BBC Sport

Ouch. American Dawn Harper-Nelson crashes into one of the hurdles. She was the second fastest in the field. She was tipped as a medal contender but hits the second hurdle hard with her trailing leg and that sends her face-first into the next hurdle.

Britain's Cindy Ofili, running in lane nine, finishes sixth in 12.91 seconds. It won't be enough for a place in the final.

BBCCopyright: BBC

Great Britain's Cindy Ofili is in the first semi-final in the women's 100m hurdles. America's Sharika Nelvis looks the woman to beat, after she recorded a time of 12:34 seconds earlier this year.

Great Britain have won three medals so far in this World Championships, but we want your predictions on how many medals hey will have by the end of the day.

Will it remain at three or will a British athlete or two be celebrating later? Vote now on the right-hand side of this page and voting will close at 13:00 BST.

Great Britain will be represented in the women's 100m hurdles semi-finals on Friday by sisters Tiffany Porter and Cindy Ofili.

Porter, a bronze medallist at the World Championships in 2013, raced to a comfortable victory in her heat, in a time of 12.73 seconds.

Her younger sister, Ofili, finished fourth in her heat, in 12.97, to also progress to the semi-finals.

AFP/GettyCopyright: AFP/Getty

Not the best of start for Great Britain's Goldie Sayers as she throws 58.28m, well short of the qualifying distance of 63.50m.

Still two more attempts for the 33-year-old, who has a good deal of strapping around her right knee.

We mentioned that Robbie Grabarz had not made it into the high jump final.

"It was not to be for Robbie Grabarz. But he recently went for knee surgery and the surgeon couldn't believe he walked in as his knee had been so bad. Hopefully he will have gained something from competing here."

iamsusannkala:  Seeing the #SouthAfrican flag flying alongside USA & Jamaica. Well deserved bronze for #Jobodwana well done!  

Ianthompson:  Dina will need to take lumps out of Kathy Cook's record to win. Schippers walked the last 25m of her semi. Have a blast, Dina!  

The first medals of the day have already been handed out. And China claimed a one-two finish in the 20km walk to win their first gold medal of the World Championships.

Liu Hong and Lu Xiuzhi entered the Bird's Nest stadium side by side at the end of the race.

But it was world record holder Liu who took gold in 1 hour 27 minutes 45 seconds, with Lu a stride behind. Lyudmyla Olyanovska of Ukraine won the bronze medal, 28 seconds behind the Chinese walkers.     

Getty ImagesCopyright: Getty Images

Thirty-eight centimetres. That was all that separated Goldie Sayers from an Olympic Games bronze medal.

The Bird's Nest stadium in Beijing was the scene when Sayers finished fourth in the women's javelin final in 2008. Her best throw was 65.75m, agonisingly short of the 66.13m effort from Christina Obergfoll that won a bronze.false

But can the 33-year-old Sayers book her place in the final? The first section in the javelin qualification has just started and we will be bringing you regular updates. She needs 63.50m to qualify for the final.

Getty ImagesCopyright: Getty Images

It has been a bad summer for Australian bowler Mitchel Starc, after losing the Ashes to England.

Getty ImagesCopyright: Getty Images

But his brother Brandon is having a happier time in Beijing, where the younger of the Starc siblings has qualified for the final of the high jump in a personal best of 2.31m.

Wonder if he is as handy with a cricket ball?

Getty ImagesCopyright: Getty Images

Getty ImagesCopyright: Getty Images

Earlier today, Great Britain's Robbie Grabarz failed to reach the final of the men's high jump.

Needing 2.31m for automatic qualification, the Olympic bronze medallist could only manage 2.26m.

Grabarz, who only returned from knee surgery this year, said: "I’m just happy to be here, I shouldn’t be saying that – but I am. 

"Surgery was just a year ago, and my body feels great – I just need to get technically fit, which shouldn’t be too difficult."

Olympic champion Ivan Ukhov also failed to qualify.

A touching / bizarre moment at the end of Usain Bolt's medal ceremony.

The photographer who crashed into him after the 200m final yesterday is waiting for Bolt so he can give the Jamaican a present, apologise for the incident and wrap what appears to be some kind of friendship bracelet around his wrist.

Bolt looks a bit bemused, but the pair shake hands and are friends, apparently.

BBC SportCopyright: BBC Sport

Quote Message: Usain Bolt's average time in his four world 200m final victories is 19.45 seconds. Only Michael Johnson and Yohan Blake have ever run faster.

Usain Bolt's average time in his four world 200m final victories is 19.45 seconds. Only Michael Johnson and Yohan Blake have ever run faster.

As always we want your thoughts on the action from Beijing today. So don't be shy, tweet us using #bbcathletics or leave a message on the BBC Sport Facebook page.

And the medal ceremonies come thick and fast as it is now Usain Bolt's turn to step on to the top of the podium. Yet again. For a tenth time at a World Championships.

He filmed his 100m medal ceremony with a video camera earlier in the week but has left the camera behind today.

Polite applause for Justin Gatlin from the Beijing crowd as he picks up his second silver medal of the championships.

Getty ImagesCopyright: Getty Images

Back in the Bird's Nest and the American flag is raised as Allyson Felix picks up her gold medal after winning in a season's best time of 49.26 seconds.

"I think she is under-rated as an athlete - she shows up at championships and truly delivers," says Michael Johnson on BBC Two.

So how do you stop Usain Bolt? Justin Gatlin and the rest of the field in the 100m and 200m couldn't find a way, but a Chinese cameraman on a segway found out how. Take him out ankle high from behind. The amazing video is definitely worth watching.

Just as Bolt was minding his own business, celebrating his victory, a cameraman clipped a barrier...

BBCCopyright: BBC

...and crashed into the back of Bolt, sending the champion flying.

BBCCopyright: BBC

BBCCopyright: BBC

Luckily Bolt was OK and saw the funny side of it.

"They were trying to kill me, I don't know what was going on" he joked.

"They are like 'you're winning too much so take him out'.

"It was another of Usain Bolt's great conjuring tricks. Coming into these championships Gatlin had run more than two tenths of a second faster over 200m than any other man in the field this year, and almost half a second quicker than Bolt.

"Ten World Championship gold medals now, another in his sights in the sprint relay; six Olympic golds, Rio and the chance for three more less than 12 months away.

"It cannot keep going forever. The current end date is August 2017 and the next World Championships in London. The world records will probably sit untouched for a generation, but the man who set them will one day be gone.

"It is why we should cherish every victory, even as they seem inevitable, every little vignette as the cameras come searching for him before he goes to his blocks, every selfie-laden lap of honour." 

Getty ImagesCopyright: Getty Images

"Usain Bolt is the best in the world and he does not have any rivals. We have to give him a lot of credit for running in the 100m and 200m - this is the most he has been challenged." 

Getty ImagesCopyright: Getty Images

Just like all good films, it deserved a sequel.

Bolt v Gatlin. Good versus Bad, or so it was badged up. An Olympic hero versus a disgraced two-time drug cheat.

Good triumphed in the first installment, the 100m on Sunday, but what would happen in the second part - the 200m?

The world waited. And again Bolt delivered. In emphatic style. He stormed to victory in 19.55 seconds - the fastest time in the world this year - with American Gatlin trailing in second in 19.74.

Getty ImagesCopyright: Getty Images

Getty ImagesCopyright: Getty Images

But before we focus on today's action, let's have a quick look at yesterday's main event.

Michael Johnson, Denise Lewis and Paula Radcliffe join Gabby Logan in the BBC studio and live coverage can be watched right now by pressing the play button.

Hello, thanks for joining us and welcome to BBC Sport's live text commentary from day seven of the World Athletics Championships.

Great Britain have won three gold medals so far in Beijing, and we have more chances of medals today.

Three Brits are in the women's long jump final, and teenage sprint sensation Dina Asher-Smith runs in the women's 200m final. We will also see British competitors try to secure their places in the women's javelin, women's 100m hurdles and men's 1500m finals. It is going to be a fun day.

Sunday was meant to be the day Katarina Johnson-Thompson had been dreaming of. It was the final day of the women's heptathlon, an event she had been tipped to win a medal in.

But sport can be cruel.

Getty ImagesCopyright: Getty Images

Three successive fouls in the long jump saw her fail to collect any points and ended her medal hopes.

The tears flowed as the hopes were dashed.

Getty ImagesCopyright: Getty Images

But now she has a second chance of glory. She has qualified for the women's long jump final and is again dreaming of gold. Will the story have a Hollywood ending? Can she end a tough week on the podium?

Getty ImagesCopyright: Getty Images