Jake Paul is confident he will knock out Tyron Woodley within three rounds.
The YouTube star turned professional boxer will take on the former UFC welterweight champion on August 29 in Ohio.
He has knocked out fellow social media star AnEsonGib, former basketball star Nate Robinson and former UFC stand-out Ben Askren.
And he is confident of continuing the trend against Woodley who is making his boxing debut.
“He’s going to be sent into retirement by a Disney star YouTube boxer,” Paul said. “Your career is over, I’m going to bounce your brain off your skill [and give you] instant concussion.
“You have never been in a fight like this, you’ve never been in a fight of this scale.
“The whole MMA community is counting on you to knock me out but you’re going to be the laughing stock of the internet.
“This is my toughest fight by far and that’s what I want, I want to increase my opponents skill leave and challenge myself. He was boxing when I was on the Disney channel.
“You will see a boxing clinic put on and this man won’t go more than three rounds.”
Paul has also called out UFC legends Conor McGregor and Nate Diaz as he bids to prove he is no flash in the pan.
And he added: “I think the secret’s out of the bag; I’m sparring some of the best fighters in the world and when I knock out Tyron people will say I’m the real deal.
“I’m going to take him into deep waters and make him drown; this is my make or break fight.”
Woodley reigned as the UFC’s welterweight champion from three years to 2016 to 2019.
He holds victories over Darren Till, Demian Maia, Stephen Thompson, Robbie Lawler and Kelvin Gastelum but lost his belt to current 170lb ruler Kamaru Usman.
And Woodley lost his final four fights in the UFC before his contract was expired and he was released.
But he insisted he has the ability to stop the Paul hype train in its tracks.
“This is a fight; this is not for play, this is for real,” he said. “So many people come up to me on a daily basis and say you’ve got to knock him out.”
Next month’s main event will be supported by a world title fight between Amanda Serrano and Yamileth Mercado.
Serrano will defend her two featherweight titles against Mercado who is stepping up from super-bantamweight.