Bolt (19.55) wins 200m gold from Gatlin in silver (19.74)
GB's Zharnel Hughes fifth
USA's Allyson Felix wins 400m for ninth world title
Christine Ohuruogu eighth in 400m
GB's Sophie Hitchon fourth in hammer final
Asher-Smith wins 200m semi in 22.12
GB's Oskan-Clarke wins 800m semi-final
Morocco's Rababe Arafi (1:58.55) crosses the line first in the women's 800m semi-final but Britain's Jenny Meadows is seventh which means there'll be no place for Wigan's finest in the final despite her running a season's 2:00.53. She gives herself a 'two or three out of 10' for that performance.
Image source, APTonight, on BBC Radio 5 live, is your chance to speak to Michael Johnson about all this athletics, which will probably include a certain Justin Gatlin...
Here's some more on what we were talking about earlier with Justin Gatlin's agent Renaldo Nehemiah accusing the BBC of being unprofessional during their coverage of the men's 100m final.
BBC commentator Steve Cram responds: "The comments I made were not about Justin Gatlin, it was about the whole sport needing its hero to win.
"Gatlin will probably never be a hero. He has a right to run, according to the rules, but he has no right to expect people to like him or for people to complete forgive him because the sport is in severe danger."
Here's a clip showing Michael Johnson hitting back at an interview with Justin Gatlin's agent Renaldo Nehemiah in which he accused the BBC of being biased against his athlete.
And watch the full debate by clicking here.
Michael Johnson criticises Justin Gatlin.
Women's 200m semi-finals
Quote MessageI'm really happy. Now I'm a World Championships finalist and that's more than I could've asked for. I was really happy with the heat and when I saw who I had in the semi-final I knew it was strong competition and that I would have to really go for it. That was so much fun. Oh my, I'm a World Championship finalist. I'm loving being in Beijing.
Great Britain's Dina Asher-Smith, Winner of her semi-final in the women's 200m
Poland's Anita Wlodarczyk has done it again the hammer, recording another championship record with a 80.85m thrown. Her closest challenger, China's Wenxiu Zhang has thrown a season's best but is still 4.52m behind.
Britain's Sophie Hitchon still fourth...
Michael Johnson
400m world record holder on BBC TV
Quote MessageDina Asher-Smith handled herself like a veteran, not a 19-year-old. That was fantastic. She'll be in a good position in the final - it will get tougher but she's focusing on her own race and performances.
Image source, AFPDina Asher-Smith's 20.12 is the fastest time of the 200m semi-finalists, which is incredibly impressive for a 19-year-old who isn't even a full-time athlete.
Jamaica's Elaine Thompson, 0.01 seconds behind, is second on the list and is one of the favourites for gold.
Dave J Sherwood: @dinaashersmith, external is such a star, she just ran away from the field in that semi-final! Ran away from Campbell-Brown!
CraigVille: Amazing semi-final from Dina Asher-Smith!
Chris Latimer: I was thinking Dina Asher-Smith may edge a bronze . After that I think she's a contender for the gold.
Women's 200m semi-finals
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
"It's great to see that the world's top sprinters are fearing this young girl. She is 19 but runs like she is full of experience. Dina has a beautiful, long, lopping stride that's helped her pull away from the field. Brilliant, brilliant, brilliant."
Dina Asher-Smith smiling and gigling as she speaks to BBC's Phil Jones. "Now I'm a World Champs finalist, that's more than I could have asked for," she says.
Asher-Smith wins 200m semi-final
Darren Campbell
Former British sprinter on BBC Radio 5 live
Quote MessageDina Asher-Smith is a special, special lady. She has just said to Schippers 'I am here to challenge, I'm here to get a medal'. That was a superb performance. I am excited watching that.
Dina Asher-Smith in the lead coming out of the bend! Dina Asher-Smith still leading! Still leading! And she wins it by a distance!
A personal best 22.12 for the Briton, just 0.02 off the British record.
Jamaica's Jeneba Tarmoh was second in 22.38, while Veronica Campbell-Brown managed to stay in her lane, finishing third in a season's best 22.47.
Here we go. Dina Asher-Smith, over to you. The 19-year-old has a habit of making history with every race so how quickly will she go in the third 200m semi-final? Will the British record go? She was close to it in the heats.
Image source, APCould the men's triple jump be any closer? No. Pablo Pichardo jumps 17.60m and then Christian Taylor follows him, hop, skip and jumping the same distance!
Image source, Reuters"I'm going to have to get back to the hotel and tell Linford," says Margaret Adeoye, going on to explain that she doesn't know what went wrong on the track but hopes her coach Linford Christie has some answers.
Darren Campbell
Former British sprinter on BBC Radio 5 live
Quote MessageI think Schippers' performance just said 'good luck' to the other runners. That was very impressive.
Image source, APEuropean champion Dafne Schippers is in the second 200m semi-final, how will she fare? Impressively.
The Dutchwoman can ease off the throttle 30m from the finishing line because victory is hers - in 22.36. Jamaica's Sherone Simpson (22.53) has also qualified for the final.
By the way, Britain's Margaret Adeoye was eighth, clocking 23.34.
Image source, AP