But first Croatia make a change. Mateo Kovacic is replaced by attacking midfielder Lovro Majer.
Oh, and by the way, Brazil brought on Alex Sandro and Fred before the second half of extra time.
Post update
Croatia 0-1 Brazil
This could be Luka Modric's last World Cup game. He isn't willing to let it be.
The Croatia captain twists and turns near the goal-line on the left and wins a corner...
Post update
Croatia 0-1 Brazil
Ivan Perisic swings in a ball from the left, but Brazil head clear.
Post update
Croatia 0-1 Brazil
Croatia aren't ready to throw in the towel yet, not on this evidence. They are still gamely knocking the ball about and chasing every loose ball like it is their last.
Get Involved
Tweet #bbcfootball, text 81111 (UK only - standard rates apply) or WhatsApp 03301231826
Marc: Who said Brazil didn't have a superstar??
Billy: Nothing more than Brazil deserved, not sure Neymar deserved it but that’s what the big players do.
Andy: Big players produce the big moments in the biggest games..and there aren't many bigger than Neymar
Post update
Croatia 0-1 Brazil
Like Alex Scott pointed out, the Croatia players looked broken after the goal.
There must have been two and a bit minutes between Brozovic's miss and Neymar's goal.
KICK-OFF
Croatia 0-1 Brazil
Back under way then. Can Croatia raise themselves again?
'Those are the difference makers'
Croatia 0-1 Brazil
Jurgen Klinsmann
Former Germany head coach on BBC One
Those are the difference makers in this tournament. It's going to be very difficult for Croatia to equalise.
He goes into that run not knowing where he will end up! But those are the difference makers - they just give it a try. These are things you cannot teach.
Getty ImagesCopyright: Getty Images
'Croatia looked distraught'
Croatia 0-1 Brazil
Alex Scott
Former England and Arsenal defender on BBC One
We got some entertainment! Neymar produced a bit of magic. Of all the people for it to fall to, it had to be him.
Every Croatian player looked distraught - only Lovren was saying we go again.
Getty ImagesCopyright: Getty Images
Neymar equals Pele's record
Croatia 0-1 Brazil
That goal by Neymar was also historic.
The Brazil forward has just equalled Pele as Brazil's all-time men's top scorer with 77 Fifa-registered goals.
Relief all around the ground
Croatia 0-1 Brazil
Chris Bevan
BBC Sport at Education City, Qatar
Neymar was buried in a mountain of Brazil players and substitutes when he celebrated his goal, and was then individually hugged by everyone.
In the stands, the emotion is pure relief at the moment... the big screens at the stadium are showing Brazil fans with big smiles on their faces - and there is lots of dancing going on.
Getty ImagesCopyright: Getty Images
HALF-TIME - EXTRA-TIME
Croatia 0-1 Brazil
Brazil are just 15 minutes - just 15 long, agonising minutes - away from the semi-finals of the 2022 World Cup.
Post update
Croatia 0-1 Brazil
That goal had everything. Stunning.
'Finally!'
Croatia 0-1 Brazil
Jermaine Jenas
Former England midfielder on BBC One
Finally, one of the best players in the world turns up.
What a goal that is. He has one thing in his mind to drive through the heart of Croatia.
The balance, the composure, the brilliance - it has not been there all night, but when it mattered he delivered.
GOAL - Croatia 0-1 Brazil
Neymar
Big players show up at big moments.
Neymar, who has been off-key today, fires Brazil into the lead with virtually the last kick of the first half of extra time.
The PSG forward shows desire and determination to break through the Croatia defence, picking up a return ball to dance around the keeper and fire into the roof of the net.
Brazilian bedlam!
Post update
Croatia 0-0 Brazil
One minute of stoppage time.
Brazil hoping to punish Croatia after that miss...
Post update
Croatia 0-0 Brazil
Feels like there is a stunned silence in the stadium after that Brozovic miss.
Got to hit the target. Got to. No excuse.
Post update
Croatia 0-0 Brazil
Jermaine Jenas
Former England midfielder on BBC One
Usually Brozovic is so cool, calm and collected in the middle of the park.
When that was needed, he snatched at it.
Post update
Croatia 0-0 Brazil
What a chance for Croatia!!
Blimey.
Substitute Bruno Petkovic does superbly on the left, skipping through the Brazil defence and passing square to the supporting Marcelo Brozovic.
A gap opens... he has time... but he blasts over!!
Incredible.
Post update
Croatia 0-0 Brazil
Big tackle from Dejan Lovren! The Croatia centre-back breaks up a Brazil attack like prime Moore on Pele and suddenly Croatia are off on the counter...
Live Reporting
Jonathan Jurejko
All times stated are UK
SUBSTITUTIONS
Croatia 0-1 Brazil
But first Croatia make a change. Mateo Kovacic is replaced by attacking midfielder Lovro Majer.
Oh, and by the way, Brazil brought on Alex Sandro and Fred before the second half of extra time.
Post update
Croatia 0-1 Brazil
This could be Luka Modric's last World Cup game. He isn't willing to let it be.
The Croatia captain twists and turns near the goal-line on the left and wins a corner...
Post update
Croatia 0-1 Brazil
Ivan Perisic swings in a ball from the left, but Brazil head clear.
Post update
Croatia 0-1 Brazil
Croatia aren't ready to throw in the towel yet, not on this evidence. They are still gamely knocking the ball about and chasing every loose ball like it is their last.
Get Involved
Tweet #bbcfootball, text 81111 (UK only - standard rates apply) or WhatsApp 03301231826
Marc: Who said Brazil didn't have a superstar??
Billy: Nothing more than Brazil deserved, not sure Neymar deserved it but that’s what the big players do.
Andy: Big players produce the big moments in the biggest games..and there aren't many bigger than Neymar
Post update
Croatia 0-1 Brazil
Like Alex Scott pointed out, the Croatia players looked broken after the goal.
There must have been two and a bit minutes between Brozovic's miss and Neymar's goal.
KICK-OFF
Croatia 0-1 Brazil
Back under way then. Can Croatia raise themselves again?
'Those are the difference makers'
Croatia 0-1 Brazil
Jurgen Klinsmann
Former Germany head coach on BBC One
Those are the difference makers in this tournament. It's going to be very difficult for Croatia to equalise.
He goes into that run not knowing where he will end up! But those are the difference makers - they just give it a try. These are things you cannot teach.
'Croatia looked distraught'
Croatia 0-1 Brazil
Alex Scott
Former England and Arsenal defender on BBC One
We got some entertainment! Neymar produced a bit of magic. Of all the people for it to fall to, it had to be him.
Every Croatian player looked distraught - only Lovren was saying we go again.
Neymar equals Pele's record
Croatia 0-1 Brazil
That goal by Neymar was also historic.
The Brazil forward has just equalled Pele as Brazil's all-time men's top scorer with 77 Fifa-registered goals.
Relief all around the ground
Croatia 0-1 Brazil
Chris Bevan
BBC Sport at Education City, Qatar
Neymar was buried in a mountain of Brazil players and substitutes when he celebrated his goal, and was then individually hugged by everyone.
In the stands, the emotion is pure relief at the moment... the big screens at the stadium are showing Brazil fans with big smiles on their faces - and there is lots of dancing going on.
HALF-TIME - EXTRA-TIME
Croatia 0-1 Brazil
Brazil are just 15 minutes - just 15 long, agonising minutes - away from the semi-finals of the 2022 World Cup.
Post update
Croatia 0-1 Brazil
That goal had everything. Stunning.
'Finally!'
Croatia 0-1 Brazil
Jermaine Jenas
Former England midfielder on BBC One
Finally, one of the best players in the world turns up.
What a goal that is. He has one thing in his mind to drive through the heart of Croatia.
The balance, the composure, the brilliance - it has not been there all night, but when it mattered he delivered.
GOAL - Croatia 0-1 Brazil
Neymar
Big players show up at big moments.
Neymar, who has been off-key today, fires Brazil into the lead with virtually the last kick of the first half of extra time.
The PSG forward shows desire and determination to break through the Croatia defence, picking up a return ball to dance around the keeper and fire into the roof of the net.
Brazilian bedlam!
Post update
Croatia 0-0 Brazil
One minute of stoppage time.
Brazil hoping to punish Croatia after that miss...
Post update
Croatia 0-0 Brazil
Feels like there is a stunned silence in the stadium after that Brozovic miss.
Got to hit the target. Got to. No excuse.
Post update
Croatia 0-0 Brazil
Jermaine Jenas
Former England midfielder on BBC One
Usually Brozovic is so cool, calm and collected in the middle of the park.
When that was needed, he snatched at it.
Post update
Croatia 0-0 Brazil
What a chance for Croatia!!
Blimey.
Substitute Bruno Petkovic does superbly on the left, skipping through the Brazil defence and passing square to the supporting Marcelo Brozovic.
A gap opens... he has time... but he blasts over!!
Incredible.
Post update
Croatia 0-0 Brazil
Big tackle from Dejan Lovren! The Croatia centre-back breaks up a Brazil attack like prime Moore on Pele and suddenly Croatia are off on the counter...