Michal Cieslak supporters in the arena are doing their best to drown out the cheers as the champion's name is announced.

Both fighters are well supported and both sets of fans are well up for this.

"LONDON MAKE SOME NOISE!"

London, or more specifically the 10,000 inside the O2 Arena, proceeds to make a lot of noise.

Superb atmosphere!

Image source, Getty Images

Anthony Joshua is ringside holding aloft the WBO cruiserweight belt for his friend as Lawrence Okolie gets into the ring.

Not long now until the main event gets under way.

But the ovation for Lawrence Okolie is something else. Deafening cheers as he does some shadow boxing before making his way to the ring.

The first to make his walk to the ring is challenger Michal Cieslak and he's got a lot of fans out in London tonight. Great ovation for the Polish fighter.

Kal Sajad
BBC Sport at O2 Arena

Should Okolie come through today, he said he’ll be eyeing up a bout against WBC champion Ilunga Makabu or the IBF and Ring Magazine champion Mairis Breidis.

British fans will be familiar with Congo’s Makabu, who lost to Tony Bellew at Goodison Park in 2016, while Breidis is quite the character and arguably a more entertaining opponent for Okolie.

The Latvian recently hit the headlines by getting a tattoo on his thigh calling out YouTuber-turned-boxer Jake Paul. That didn’t go down too well with both hardcore boxing fans and Okolie, who labelled it as “ridiculous”.

*Mandatory Sweet Caroline mention*

The pre-fight classic is being played and the O2 Arena is unsurprisingly lapping it up.

Some people like it, some people don't but it can't be denied that it really whips up the atmosphere.

DAZN have just grabbed a quick word with Anthony Joshua, who started with his thoughts on Gala Yafai and that feeling of coming out into the arena for the first time as a pro fighter.

"It is pressure but I think they are used to it now," he said. "They are top tier fighters at the end of the day. It is just about containing that pressure and letting it all out of the ring."

And on Lawrence Okolie v Michał Cieslak, he added: "Lawrence is good. The geezer he is fighting is good as well. All he can do is his best. All we want as fans is an entertaining fight.

"It has been a good card so far and I am looking forward to this fight now."

Kal Sajad
BBC Sport at O2 Arena

Promoter Eddie Hearn has described Michal Cieslak as Okolie’s toughest opponent to date.

I spoke to Okolie earlier in the week and he’s not taking this fight lightly. The Polish Cieslak is a genuine world-level fighter, having challenged for the vacant WBC title against Congolese fighter Ilunga Makabu in 2020.

Having said all that, a loss today would be pretty disastrous for Okolie, who is in touching distance of unification fights. He will be looking to win and win in style.

BBC Radio 5 Live

Commentary on BBC Radio 5 live has just started. Get on it!

Anthony Joshua is in the house. He's arrived just in time for the main event.

Kal Sajad
BBC Sport at O2 Arena

Just nine days ago a part of the fabric roof at the O2 was blown off by Storm Eunice. But the roof is fixed and we're good to go. I am trying (and have now failed) to resist the urge of making an 'Okolie will be hoping to blow the roof off again' pun.

I thought I was better than that.

Galal Yafai, speaking to DAZN: "I knew I was fit enough, I knew he was a tough guy who had never been stopped before. I knew he would come back with his own shots but I am glad I got it done earlier."

On coming out into the arena for his pro debut: "It was brilliant. I was used to seeing my brothers and all the other pro guys. It felt good, I tried to not pay too much attention. I was in tunnel vision out there."

On his progress from here: "I have to move at the right pace. I am 29, I am Olympic champion. I know I can't be taking those kinds of shots against a world champion."

Kal Sajad
BBC Sport at O2 Arena

Campbell Hatton - son of British boxing legend Ricky Hatton - continued his professional boxing journey with an impressive sixth-round stoppage over Joe Ducker.

Mancunian Hatton has had his fair share of critics since turning professional, most notably when he controversially beat Spaniard Sonni Martinez last year - a fight almost all those watching thought he had lost.

But the 21-year-old - now 6-0 as a pro - is improving at a decent rate and his latest performance was probably the best of his career so far.

Hatton - much like his dad - was relentless and whipped in some powerful body blows throughout before forcing a late stoppage.

Image source, Getty Images

That's it for the undercard then leaving just the main event to come.

Before we focus on Lawrence Okolie's title defence against Michal Cieslak here's a quick look back at any other big moments from the undercard.

Kal Sajad
BBC Sport at O2 Arena

I said it earlier and I'll say it again ... I know it's early days but Galal Yafai is a superstar in the making. The referee stopped the fight just as the towel was about to come in. Statement made.

Image source, Getty Images

All over!

Galal Yafai drops Bautista and the referee stops the fight in round five.

Victory for Yafai on his pro debut. A hugely impressive display.

One of Bautista's eyes is starting to close as a few straight left hands from Yafai get through.

Bautista, once threatening with that strong right, is now swinging wildly and Yafai senses an opportunity to end this.

He has Bautista in the corner and is landing punches freely but somehow Bautista gets through to the end of the round.

Bautista gets another good right hand through early on that briefly has Yafai staggering on his feet.

Once again, though, Yafai counters his opponent's positive start and mixes up some head and body shots and by the end of the round Bautista's face is starting to puff up.

Yafai still looks fresh but Bautista appears to be tiring.