Logan Paul and KSI’s reaction to Anthony Joshua knocking out Francis Ngannou has gone viral after the former UFC star fell to defeat in Saudi Arabia on Friday.

Joshua knocked down Ngannou for the first time in his career in the first round before putting him on the canvas again early in the second.

The fight was over when Joshua put Ngannou to the floor with a powerful right hand in the second round, with the former UFC fighter unable to get back to his feet after the knockout.

KSI and Logan Paul were together for WWE’s Friday Night Smackdown where Randy Orton RKO’d the English YouTuber and have since reacted to the knockout.

Taking to TikTok, Paul uploaded a video showing their stunned reaction, with the short captioned ‘My god @AnthonyJoshua’.

Joshua knocked down Ngannou for the first time in his career in the first round before putting him on the canvas again early in the second

The fight was over when Joshua put Ngannou to the floor with a powerful right hand again in the second round

‘This is how the Fury fight (vs Ngannou) should have went’, began Paul.

‘Oh my God!,’ he continued after the knockout. ‘He killed Francis Ngannou.’

KSI continued: ‘No, he’s actually killed him bro. Oh my f***ing God.’

‘He crumbled.’ finalised Paul.

While the internet sensations couldn’t believe their eyes, Tyson Fury also reacted to the bout.

‘I had a s*** performance against Ngannou. AJ did absolutely fantastic and lit him up with a right hand,’ he said in the immediate aftermath of the knockout.

‘If he fights me after I beat Usyk twice then it will be a different game.’

It remains to be seen as to what is next for AJ, with a fight against Tyson Fury on the cards in the future.

Meanwhile, his brother Tommy has also been out of action since defeating KSI in a controversial decision last year.

The younger Fury has admitted his eyes are set on a rematch with Logan Paul’s brother, Jake, in the future, while KSI will no doubt have a score to settle with the ex-Love Islander.