Postpublished at 05:29 Greenwich Mean Time 10 November 2019
Round 4
Steve Bunce
BBC Radio 5 Live boxing pundit
Jack Reese - one of the most experienced referees in the world - has missed that knockdown! KSI was really hurt.
YouTubers KSI and Logan Paul square up in professional fight at Staples Center in Los Angeles
First fight at Manchester Arena last August ended in a draw
Undercard: WBO super-middleweight world champion Billy Joe Saunders stops Argentine Marcelo Esteban Cocere
American Devin Haney defeats Dominican Republic's Alfredo Santiago
Get involved: #bbcboxing
Marc Higginson
Round 4
Steve Bunce
BBC Radio 5 Live boxing pundit
Jack Reese - one of the most experienced referees in the world - has missed that knockdown! KSI was really hurt.
KSI bides his time. A bit of dancing gets him to the bell.
Seriously... whatever you think about this event, it's superb entertainment. And that's what sport is about, isn't it?
The referee is a nice bloke. He's giving KSI time, recognising he was unfairly hindered there.
And he DEDUCTS two points from Logan Paul's scorecard. But he does score for the knockdown.
Round 4
Steve Bunce
BBC Radio 5 Live boxing pundit
Both fighters are letting their hands go before getting their feet in place. I've got it 2-1 to KSI at the moment but this is a hard fight.
Drama - a right uppercut knocks KSI down and Logan Paul hits the Brit on the head as he went down.
The referee sends the men to neutral corners.
Boos ring round the arena.
Logan keeps KSI at bay with his jab. He's stuck to his gameplan, but perhaps to his detriment.
KSI shows no sign of slowing down.
Round 4
Steve Bunce
BBC Radio 5 Live boxing pundit
We knew after a couple of rounds this was going to get scrappy. This is going to be about heart and guts now.
Normal service resumed: KSI on the front foot and Logan Paul backing up.
Round 3
Steve Bunce
BBC Radio 5 Live boxing pundit
Too much nervous energy in there at the moment. The man who can loosen up is the man who is going to win.
Now it's Logan Paul who comes out like a firecracker. He lands a right to the side of KSI's face which hurts the Brit.
Round 3
Steve Bunce
BBC Radio 5 Live boxing pundit
Logan Paul was not hurt there. He was caught on the back of the head with the arm. No knockdown.
Logan stands with his hands at his side, inviting KSI to keep swinging.
Strange tactics.
As the TV commentator points out, KSI can bang.
With a capital B.
KSI puts down Logan Paul with a right. The Staples Center erupts. The referee says it wasn't a knockdown though. More of a slip.
Paul's chin is granite-like at times.
Round 3
Chunkz
Youtuber ringside for BBC Sounds
KSI is swinging but this is working out for me. He's looking good - I know it doesn't look like it but he is!
Bunce knows best, you know.
KSI has the treadmill set at maximum. But can he sustain it?
Round 2
Steve Bunce
BBC Radio 5 Live boxing pundit
KSI knows one big right hand and this fight is over but If Logan can get the jab going he can win this. KSI isn't using his brain at the moment.
Logan is trying to bring KSI into his orbit. That negates the long-range rights and allows the American to work on the inside.
Round 2
Steve Bunce
BBC Radio 5 Live boxing pundit
This is shaping up beautifully. That left hand of Logan Paul is still low but he's not in trouble.
KSI is like an assassin. Logan looks worried.
He's got the aura of a man who is momentarily thinking 'what am I doing here?'
Round 2
Steve Bunce
BBC Radio 5 Live boxing pundit
The amount of nervous energy from these two is incredible, which is going to make things so much harder.