It is the world championships that delivers shock after shock.
See you tomorrow for the next installment.
Tomorrow's action
19:00 - Women's hammer final: This event features former ballet dancer Sophie Hitchon, who became the first British women to win an Olympic hammer medal with bronze in Rio last summer.
21:30 - Men's 110m hurdles final: Jamaica's Olympic champion Omar McLeod is the favourite but world record holder Aries Merritt is also in good form. Britain's Andrew Pozzi went out in the semi-finals.
21:50 - Women's 1500m final: Britain have twice won silver in this event - Hannah England (2011) and Lisa Dobriskey (2009) - but Muir will hope to be their first world champion. The Scot's main rivals look to be Faith Kipyegon and Genzebe Dibaba, while 800m Olympic champion Caster Semenya will also be a threat and British team-mate Laura Weightman will hope to snatch a medal.
Am I really world champion?
Women's 100m final
Getty ImagesCopyright: Getty Images
American Tori Bowie says it has not sunk in that she is the world 100m champion.
"I feel the hard work has finally paid off," she tells BBC Sport. "I couldn't be more happy. It hasn't even sunk in. Am I really the world champion?
Bowie fell after crossing the finishing line.
"I'm a bit bit sore but I'm pretty sure it is nothing major," adds the 26-year-old.
Watch: where it went wrong for Thompson
More to come from Holly
Women's pole vault final
Denise Lewis
Olympic heptathlon gold medallist on BBC TV
Holly Bradshaw's early failures at 4.65 really cost her a medal. She will learn from this.There is more to come from her for sure.
Power shift?
#bbcathletics
Jonathan Heeley: Putting the Bolt/Gatlin drama aside we have seen a power shift in sprinting from Jamaica to USA in these Worlds.
KJT is improving
Denise Lewis
Olympic heptathlon gold medallist on BBC TV
I know inside Katerina Johnson-Thompson will be bitterly disappointed but she is improving.
'Anything can happen'
Shock of the night
Women's 100m final
Michael Johnson
Four-time Olympic gold medallist athlete on BBC TV
It is the shock of the night. Elaine Thompson was the favourite. It was impossible for her to catch up.
This was Tori Bowie's time. She took the opportunity to run a season's best when it counted.
Watch: KJT takes the positives
Heptathlon
Katerina Johnson-Thompson is trying to take the positives, but you sense it is a struggle.
Get Involved
#bbcathletics
Sophie Jones: What is happening in the 100m this weekend?
A nice Twitter observation from House of Run comparing Tori Bowie's dip to the king of pop.
Get Involved
#bbcathletics
Matthew Carter: That women's 100m final was incredible. No idea who came where until the results were up.
La Reine: Athletics is coming back to America like the old days.
Kelly Adams: Credit to Elaine Thompson - such a positive response to a surprising loss.
Photo finish
Bowie wins 100m gold
BBCCopyright: BBC
This was how close it was between the top two.
It looked for all the world like the Ivory Coast's Marie Josee Ta Lou had it in the bag, but Tori Bowie's lunge for the line snatched the title.
The American was sent sprawling as she flung her momentum forward, but there is a shiny gold to go with the grazes.
No excuses from Thompson
Women's 100m final
Elaine Thompson is refusing to make excuses for her failure to win a medal.
"I tried to get a start," the Jamaican tells BBC Sport. "I don't know what happened, I'll have to look back and watch. I don't want to make excuses. It was a strong field and I competed with these girls all season."
ReutersCopyright: Reuters
Jamaica suffers sprint setback
Women's 100m final
After Usain Bolt was usurped by Justin Gatlin last night, it is another body blow to Jamaica's recent sprint dominance.
It was way back in 2005 in Helsinki that they failed to land either the men's or women's 100m title at a world championships.
Schippers takes bronze
Women's 100m final
Dafne Schippers took bronze and it looks like a little stumble midway down the straight might have cost favourite Elaine Thompson.
The Jamaican is not giving away anything in her post-race interview with the BBC.
USA wins men's & women's 100m
Women's 100m final
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
Elaine Thompson just couldn't get in the race. She was completely left and will be asking herself 'what went wrong?'
The USA takes the men's and the women's 100m.
ReutersCopyright: Reuters
Bowie wins
Women's 100m final
It was mighty close and red-hot favourite Elaine Thompson was nowhere.
Instead Tori Bowie's superb death-or-glory dip on the line sends her sprawling to gold, one hundreth ahead of Ivory Coasts Marie Josee Ta Lou.
The American clocks 10.85 seconds - a season's best - while Ta Lou is timed at 10.86, which is a personal best.
Live Reporting
Mike Henson
All times stated are UK
Get involved
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Latest PostBye for now
Women's 100m final
Only one place to leave it tonight though...
Tori Bowie's extraordinary dip for glory.
It is the world championships that delivers shock after shock.
See you tomorrow for the next installment.
Tomorrow's action
19:00 - Women's hammer final: This event features former ballet dancer Sophie Hitchon, who became the first British women to win an Olympic hammer medal with bronze in Rio last summer.
21:30 - Men's 110m hurdles final: Jamaica's Olympic champion Omar McLeod is the favourite but world record holder Aries Merritt is also in good form. Britain's Andrew Pozzi went out in the semi-finals.
21:50 - Women's 1500m final: Britain have twice won silver in this event - Hannah England (2011) and Lisa Dobriskey (2009) - but Muir will hope to be their first world champion. The Scot's main rivals look to be Faith Kipyegon and Genzebe Dibaba, while 800m Olympic champion Caster Semenya will also be a threat and British team-mate Laura Weightman will hope to snatch a medal.
Am I really world champion?
Women's 100m final
American Tori Bowie says it has not sunk in that she is the world 100m champion.
"I feel the hard work has finally paid off," she tells BBC Sport. "I couldn't be more happy. It hasn't even sunk in. Am I really the world champion?
Bowie fell after crossing the finishing line.
"I'm a bit bit sore but I'm pretty sure it is nothing major," adds the 26-year-old.
Watch: where it went wrong for Thompson
More to come from Holly
Women's pole vault final
Denise Lewis
Olympic heptathlon gold medallist on BBC TV
Holly Bradshaw's early failures at 4.65 really cost her a medal. She will learn from this.There is more to come from her for sure.
Power shift?
#bbcathletics
Jonathan Heeley: Putting the Bolt/Gatlin drama aside we have seen a power shift in sprinting from Jamaica to USA in these Worlds.
KJT is improving
Denise Lewis
Olympic heptathlon gold medallist on BBC TV
I know inside Katerina Johnson-Thompson will be bitterly disappointed but she is improving.
'Anything can happen'
Shock of the night
Women's 100m final
Michael Johnson
Four-time Olympic gold medallist athlete on BBC TV
It is the shock of the night. Elaine Thompson was the favourite. It was impossible for her to catch up.
This was Tori Bowie's time. She took the opportunity to run a season's best when it counted.
Watch: KJT takes the positives
Heptathlon
Katerina Johnson-Thompson is trying to take the positives, but you sense it is a struggle.
Get Involved
#bbcathletics
Sophie Jones: What is happening in the 100m this weekend?
Watch: Bowie takes 100m gold
Worth a re-run of the 100m fun...
Bowie takes 100m gold
A nice Twitter observation from House of Run comparing Tori Bowie's dip to the king of pop.
Get Involved
#bbcathletics
Matthew Carter: That women's 100m final was incredible. No idea who came where until the results were up.
La Reine: Athletics is coming back to America like the old days.
Kelly Adams: Credit to Elaine Thompson - such a positive response to a surprising loss.
Photo finish
Bowie wins 100m gold
This was how close it was between the top two.
It looked for all the world like the Ivory Coast's Marie Josee Ta Lou had it in the bag, but Tori Bowie's lunge for the line snatched the title.
The American was sent sprawling as she flung her momentum forward, but there is a shiny gold to go with the grazes.
No excuses from Thompson
Women's 100m final
Elaine Thompson is refusing to make excuses for her failure to win a medal.
"I tried to get a start," the Jamaican tells BBC Sport. "I don't know what happened, I'll have to look back and watch. I don't want to make excuses. It was a strong field and I competed with these girls all season."
Jamaica suffers sprint setback
Women's 100m final
After Usain Bolt was usurped by Justin Gatlin last night, it is another body blow to Jamaica's recent sprint dominance.
It was way back in 2005 in Helsinki that they failed to land either the men's or women's 100m title at a world championships.
Schippers takes bronze
Women's 100m final
Dafne Schippers took bronze and it looks like a little stumble midway down the straight might have cost favourite Elaine Thompson.
The Jamaican is not giving away anything in her post-race interview with the BBC.
USA wins men's & women's 100m
Women's 100m final
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
Elaine Thompson just couldn't get in the race. She was completely left and will be asking herself 'what went wrong?'
The USA takes the men's and the women's 100m.
Bowie wins
Women's 100m final
It was mighty close and red-hot favourite Elaine Thompson was nowhere.
Instead Tori Bowie's superb death-or-glory dip on the line sends her sprawling to gold, one hundreth ahead of Ivory Coasts Marie Josee Ta Lou.
The American clocks 10.85 seconds - a season's best - while Ta Lou is timed at 10.86, which is a personal best.