Floyd Mayweather has won world titles in five different weight classes and is 50-0 in an unparalleled boxing career, but the American could be set for a stunning detour into the world of mixed martial arts after signing with Japanese promoters RIZIN Fighting Federation.
The undefeated 41-year-old, who last year said his boxing career was over after beating Irish MMA fighter Conor McGregor, told Reuters he could handle himself in whatever format was agreed for the fight on New Year's Eve in Saitama.
His opponent is set to be 20-year-old Japanese kickboxer Tenshin Nasukawa.