Joe Rogan was stunned to learn that KSI and Tommy Fury will be facing off inside the squared circle later this year.
Last week it was confirmed that the pair will lock horns on October 14 after a long period of negotiations.
The fight will be an eight-round contest and takes place in Fury's hometown of Manchester at the AO Arena as part of a Misfits Boxing and DAZN card.
Logan Paul, KSI's Prime business partner, will also be in action on the same night.
Podcast and UFC commentator Rogan was informed about the bout on his 'Joe Rogan experience' podcast and looked genuinely surprised when told by Brendan Schaub.
"KSI is fighting Tommy Fury?" a puzzled Rogan asked, with his expression absolutely priceless.
The 55-year-old then weighed in with his view, adding: "He's got skills but Tommy Fury is on another level."
Fury scored a huge victory over Jake Paul back in February, inflicting the Problem Child's first career defeat over in Saudi Arabia.
A few months after and he showed up to KSI's controversial no contest fight with Joe Fournier and got into it with former Love Island contestant Idris Virgo in the crowd, before later jumping in the ring and squaring up against 'The Nightmare'.
Fury is hoping to move to 10-0 professionally, while KSI is looking to become 6-0 with easily his toughest test.
"I came back to boxing to show the world the crazy levels I’m at," KSI said on the fight.
"I’ve shown through obliterating all my past opponents that I am the best in this scene. KO after KO has now led me to the toughest fight in the influencer boxing scene.
"I’m fighting Tommy Fury. The man that defeated the once undefeated Jake Paul is now my opponent and I can’t wait to silence all the doubters that believe I have no chance. After this fight, you’ll understand that I truly am that guy.”
Paul's opponent is yet to be revealed for the double main event.