Floyd Mayweather Jr. announced Monday in Tokyo that he has agreed to a bout in the Rizin Fighting Federation
Mayweather will fight on Dec. 31 at Saitama Super Arena in Saitama, Japan.
Both Mayweather and his opponent, Tenshin Nasukawa, were both introduced at a news conference in Tokyo by Rizin officials. It was not clear whether it will be a boxing match, an MMA fight or some other combat sport.