Fury, 24, triumphed over his YouTuber opponent courtesy of a controversial majority decision.
Immediately after the fight, KSI, real name JJ Olatunji fumed: “We’re gonna appeal. I want to appeal. I’m sorry that is outrageous.”
Speaking on his YouTube channel, Deji launched into an astonishing rant, saying: “I think they didn’t want JJ to win because it will make a mockery of the sport letting JJ, a YouTuber, beat a professional boxer, Tommy Fury.
“That’s what I believed, and I asked. That’s what I think, they just didn’t want that.
“As well as the Fury name that was on the line. It would somehow tarnish the Fury name if a YouTuber beat a professional boxer in the Fury family.
“Which in my opinion is just a bit insane because that’s not fair.
“It just shows that boxing is… there’s so much corruption in the sport. It’s disgusting bro.
“Like just seeing that alone is probably turning off a lot of people from boxing.
“Which is sad because that’s not what we try and do. We want fair quality in the sport so what’s the point of doing that?”
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KSI himself had fumed directly to Fury: “Robbery, it’s a robbery. You weren’t landing, look at your face.
“Look at you. I’m the YouTuber and you’re the boxer, you have to win.”
Jake Paul, who also lost to Fury, later took to Twitter to mock his rival’s protestations.
He wrote: “HAHAHAHA KSI SORE LOSER CHOKING UP.
“Only thing that got robbed is his hair line. It’s okay KSI me too it’s gonna be okay bubba.
“I took my loss like a man from the scorecard read and showed the youth how to learn from it and come back to take a W.
“This 30 year old man crying for an appeal.”