Postpublished at 24 mins
Marcelo plays a ball across goal, which Cristiano Ronaldo takes and, instead of playing in Gareth Bale, he fires over.
Summary
Messi scores last-second winner - his 500th Barca goal - to send them top
Barcelona go top on head-to-head with dramatic win
Real still have game in hand over Barca
Postpublished at 24 mins
Postpublished at 23 mins
Lionel Messi is back on the pitch holding a tissue onto his mouth. Are you even allowed to do that?
Postpublished at 21 mins
While that was happening, Cristiano Ronaldo forced a good save from Marc-Andre ter Stegen after cutting in from the wing. That happened from the move that felled Messi.
And now Gareth Bale takes a first-time effort which is weak. He could have controlled it.
Messi is still off the pitch being treated.
Image source, Getty ImagesPostpublished at 21 mins
Lionel Messi is down injured with his mouth covered in blood. It went unnoticed at the time but Marcelo caught him with his elbow accidentally. This doesn't look good.
Image source, Getty ImagesPostpublished at 19 mins
Real Madrid are in here, after breaking at pace but Karim Benzema's weak shot is straight at keeper Marc-Andre ter Stegen.
Barca counter and Luis Suarez's attempted volley comes off the side of his foot and goes well wide.
An open game now.
Postpublished at 20:03 British Summer Time 23 April 2017
Today is Gareth Bale's 100th La Liga appearance. Only two Britons have more, David Beckham (116) and Gary Lineker (103).
There were plenty in the Spanish media who thought his injury was a blessing in disguise, with Isco his likely replacement. Unfortunately for them, Bale recovered in time.
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End of twitter postPostpublished at 14 mins
Real Madrid appear to have switch their front three positions, Gareth Bale is on the right now and he's offside as he tries to head on a long ball forward.
YELLOW CARDpublished at 12 mins
It wouldn't be El Clasico without some cards. Lionel Messi gets involved in this game for the first time and a bit of skill sends him away before Casemiro hacks him down on the halfway line.
Image source, Getty ImagesGet Involvedpublished at 19:57 British Summer Time 23 April 2017
#bbceurofooty
Seth Gogo Egoeh: How was that not a penalty for Real Madrid? Poor officiating again! I'm not impressed.
Brayo: If Barca's era is over then it probably came in too fast
Anonymous: Bale really needs to show up tonight grab bull by horns so to speak
Postpublished at 11 mins
Barcelona have their second effort and this one is well hit, Jordi Alba's cross reaches Luis Suarez and his 20-yard effort is just wide.
This is better now from the Catalans, a lot better.
Image source, ReutersPostpublished at 10 mins
Barcelona captain Andres Iniesta, whose influence is definitely waning this season, has his first shot of the game but it's weak and off target and only goes as far as a Real Madrid defender, who can clear.
Image source, Getty ImagesPostpublished at 8 mins
Gareth Bale - back in the Real team after two matches out injured - is flagged offside as he chases a long ball forward but it was borderline. He could have had a 45-yard run at goal had the flag stayed down.
Postpublished at 6 mins
Barcelona come forward for the first time but Casemiro wins the ball and Real break at speed. Toni Kroos plays a perfect ball to Cristiano Ronaldo, whose shot from the edge of the box is saved by Marc-Andre ter Stegen.
An early goal is coming, I can feel it in my bones.
Postpublished at 19:51 British Summer Time 23 April 2017
The last 0-0 El Clasico in La Liga was 2002. The last at the Bernabeu in the league was 1987. So surely we'll have some goals.
Image source, Getty ImagesPostpublished at 4 mins
It's all Real so far as Cristiano Ronaldo does a step over and plays in full-back Dani Carvajal down the right wing but his cross is cleared.
Then Luka Modric plays in a cross which Karim Benzema can't quite control.
PENALTY APPEALpublished at 2 mins
Early attack for Real Madrid and Cristiano Ronaldo wants a penalty as he goes down after touching the ball away from Samuel Umtiti, who brings him down. It's not clear in real time, but on second viewing, that should have been a penalty. A lucky break for Barca.
Get Involvedpublished at 19:47 British Summer Time 23 April 2017
#bbceurofooty
Sean of the Head: The Barcelona team lag behind Real Madrid in every department, including their recent signings, quality of youth & work ethic
Tuhin Reza: Sorry Barcelona. Today is not for you.
Mo: You can't call yourself a football fan if you don't watch real vs Barca
KICK-OFFpublished at 1 min
Real Madrid 0-0 Barcelona
Modern football's greatest domestic club game gets under way.
Image source, Getty ImagesPostpublished at 19:45 British Summer Time 23 April 2017
I presumed Sergio Garcia's ceremonial kick-off would be in the middle but he lashes it from the wing into the stand.
Image source, ReutersPostpublished at 19:44 British Summer Time 23 April 2017
Image source, ReutersGolfer Sergio Garcia is taking the honorary kick-off.
The 37-year-old Masters champion is an honorary member of Real Madrid.