Anthony Joshua stops Wladimir Klitschko in 11th round of epic fight
Briton retains IBF world heavyweight crown and secures WBA belt
Resurgent Joshua knocked Klitschko down twice in 11th round
Joshua down in sixth round after Klitschko right hook
Joshua also put Klitschko down in fifth
Joshua roared on by 90,000 fans at Wembley Stadium
It is a big, big win in the career of Luke Campbell.
The Brit, who won a bantamweight Olympic gold medal at London 2012, is now going to get a world title fight at lightweight.
Colombian opponent Darleys Perez, who was in trouble in the eighth, looks to have sustained an arm injury and pulls himself out of the fight in the ninth, although Campbell had dominated the last few rounds.
Some big nights ahead for Campbell.
#bbcboxing
Sean: Mike Tyson, went out to demolish the other geezer not just win. No games.
Dion: My favourite was and still is Mike Tyson. Absolutely terrifying, lethal and the very definition of box office. My idol as a kid.
Bish: Has to be Lewis. Loved watching him vs Holyfield and then that win against Tyson was brilliant.
Image source, Getty ImagesLuke Campbell is on top at Wembley Stadium.
He wobbles opponent Darleys Perez in the eighth in their WBA world lightweight championship eliminator. The Colombian takes a step back after eating a beautiful looping left hook and is on unsteady feet. This fight may not have much time left.
Image source, Lawrence Lustig
BBC Radio 5 live
Former super-middleweight world champion Carl Froch, who beat George Groves at Wembley Stadium in 2014: "This is Joshua's first real test at world level. This is his acid test and against a veteran who can punch, box and move to survive when he needs to.
"I think Joshua will be nervous. Wembley Stadium will add to those nerves and I don't think they will help him. I don't think he will enjoy it like I did. Purely because there is a lot of pressure on him - he's expected to win and has this massive task.
"He needs to try and enjoy it. They say cometh the hour cometh the man. He really needs to switch on and live up to what everyone expects of him."
Did you know? Joshua's weight of 17st 12lbs is the heaviest of his career to date.
Image source, Lawrence LustigThat's what you, the great public, think. Let's find out the thoughts of some big names throughout the sport. Why not start with a man who knows what it is like to win a major fight at Wembley Stadium?
Since earlier today we have been asking, via a vote in a BBC Sport predictions story, who is going to win tonight.
The results are in and a whopping 72% of you think Anthony Joshua will be getting his arm raised later.
What's going on in the ring at the moment?
Well, Great Britain's Luke Campbell is currently in action against Colombia's Darleys Perez - the man who twice fought against Anthony Crolla in Manchester.
Perez drew with Crolla first time around, then lost in their rematch. His fight against Campbell is an eliminator for the WBA world lightweight title, well, for Campbell it is.
Perez failed to make the weight so lost the chance of potentially fighting for a world title next time out. Schoolboy mistake.
At the moment we are in the sixth round. After a bright Perez start, Campbell has got himself back into the contest. It is tight so far.
Image source, Lawrence Lustig
Luke Reddy
BBC Sport boxing reporter at Wembley
Image source, .Steve Bunce, commentator Ronald Mcintosh and former super-middleweight champion of the world Richie Woodhall are primed for 5 live duty - on air at 21:00 BST.
These two could well feature in our quest for your favourite heavyweight of all time.
Anthony Joshua meets up with former undisputed world heavyweight champion Evander Holyfield. It looks like they are good mates.
Image source, Lawrence LustigWho is your favourite heavyweight boxer of all time? Why?
As always we want your thoughts, predictions and observations on all the action.
Also, let us know just who is your favourite heavyweight of all time and include reasons on what made them so special.
Tweet us using #bbcboxing or write on the BBC Sport Facebook page., external
Klitschko tasted defeat, for the first time in more than 11 years, when he lost to Britain's Tyson Fury on points in Germany in November 2015.
Fury has not fought since, but this week said he is on his way back.
Fury v Joshua or Klitschko at Wembley this time next year? Sounds good to me.
The challenger is here. It has been a long, long time since Wladimir Klitschko turned up at an arena without any world title gold.
Will he be smiling later on? Does he have one more glorious night in an incredible career?
Image source, Lawrence LustigIn 2016 Anthony Joshua told Get Inspired how he got into boxing, why he loves it and his recipe for success.
"It's a real passionate thing - once you're involved in it you just can't get it away from it," he says.
"The work you put in always pays off - and that's why I love it."
If you're inspired to have a go at boxing why not read our special guide?
'Follow the path of people before you'
#GetInspired
Image source, BBC SportFancy followng in Anthony Joshua's footsteps?
If you want to find out how to get into boxing, just look where Anthony Joshua suggests - BBC Get Inspired, and their special guide.
Luke Reddy
BBC Sport boxing reporter at Wembley Stadium
Image source, .Wembley Park tube station crackles with atmosphere today. Gangs descend the stairway, many of them stopping for selfies with this famous stadium in the backdrop.
This wonderful piece of real estate serves up dreams and despair in equal measure. On the approach, the masses cover Olympic Way - fitting as we prepare to watch the Atlanta '96 super-heavyweight gold medal winner and the London 2012 one to boot.
The two of them are winners, of that there's no doubt. One of them though will wake on Sunday morning and feel that wrench in the pit of their stomach - defeat.
Image source, .This will be the view later on from Joshua's corner.
Image source, Lawrence LustigThe big man's looking relaxed...
What's on the menu then?
Well, for once we can be precise with the start time of the main event.
The main event will start at 10:01 BST. To be exact.
The main event is of course...
Great Britain's Anthony Joshua v Ukraine's Wladimir Klitschko
12x3 mins IBF & WBA heavyweight title fight
The undercard is quite tasty as well.
Next up Luke Campbell v Darleys Perez (12x3 mins WBA lightweight title eliminator)
Lawrence Okolie v Russell Henshaw (4x3 mins cruiserweight contest)
Scott Quigg v Viorel Simion (12x3 mins IBF featherweight title eliminator).
You can have some fun with this one.
Click on the link below and you can have a 360 degree look around Wembley Stadium. Go slowly though or you will leave yourself feeling dizzy and in need of a lie down.
BBC Sport app users will need to click on the below link...
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This is the setting. It will be the biggest post-war British boxing attendance. Just the 90,000 people.
It will be just a little bit busier than this picture earlier today. In fact, it will be carnage.
Image source, Lawrence Lustig