Floyd Mayweather is daring Japanese kickboxer Tenshin Nasukawa to put his money where his mouth is, when they collide in a three round exhibition bout.
Neither kicking nor official results are part of the Rizin Fighting Federation match, but a knockout is possible under the special rules.
Mayweather had initially appeared to walk away from the fight, set for Saitama Super Arena, on the northern outskirts of Tokyo.
Mayweather was impressed with the footage that he saw of Nasukawa, but wonders if the kickboxing sensation can take what he dishes out.
“I’m pretty sure he doesn’t have to worry about anything. Whether it’s sparring or an exhibition or a real fight, when you dish it out you have to be able to take it, so I’m pretty sure he’s going to dish it out, but he has to be able to take it,” Mayweather said.
“Even though it’s just three rounds I think we should be able to give people action.”
Mayweather hasn’t fought since beating Conor McGregor more than a year ago for his 50th win at T-Mobile Arena in Las Vegas.
Nobuyuki Sakakibara, the head of Rizin Fighting Federation, who traveled to the U.S. to woo Mayweather back to the fight, has said it involves the largest payout for an exhibition fight but has not given specifics.
Mayweather previously said he was already making “seven figures” just by talking about it.
If Nasukawa attempts use a kick or a non-boxing move – there is reportedly a penalty of $5 million.
Mayweather’s business partner told media members – “There is a penalty clause in the contract of an undisclosed amount if he is to use any moves of an MMA nature.”
Nasukawa, 20, said he wanted people to see his “courage, determination and challenging spirit.”
Nasukawa, despite his no-loss record in kickboxing and mixed martial arts, was previously little known outside Japan. He said he enjoyed the sudden international attention.
He acknowledged he didn’t understand what the English comments were saying on his Instagram account but added: “I love it.