YouTube star Logan Paul was apparently knocked unconscious by a professional UFC fighter.
The 24-year-old actor and vlogger - who last year lost a boxing match against British YouTube star KSI - was invited to the headquarters of American mixed martial arts company Ultimate Fighting Championship (UFC) to spar with UFC star Paulo Costa.
Paul said: “He’s not a human - he’s a bear, he’s a 13 undefeated UFC fighter. But it’s a good thing I’m a professional boxer now...”
Paul was given protective headwear before entering the ring with Costa. His YouTube footage of their fight shows him taking a blow to the head and falling facedown on the floor before several people rush to his aid.
After being rolled over he apparently came round and asked: “Hi. I did good?”
The video has been viewed over 2.5 million times in 24 hours.
But some have accused the YouTuber of faking the ‘knock out’.
King Yellow Ancient wrote: “It's disrespectful how fake that punch was.”
HITTTAB: “Anyone who trains can tell that was a dive. The realest part of that fight was the grappling. If anyone believes the knockout you are easily amused.”
And Michael Santos Acosta claimed: “Make it slow he didn’t get hit in the face didn’t even touch him.”
Paul has not commented on the accusations that the KO was faked.
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Known as The Eraser, Costa is ranked Number 2 in the UFC Middleweight division.
Primarily an internet personality with millions of followers and subscribers, Paul recently moved into professional boxing.
He has taken part in two pay-per-view boxing matches, both with British YouTube star KSI.
The matches, one won by Paul and one by KSI, were unpopular amongst boxing purists, but sparked a huge amount of interest, making millions of pounds in the process.