45-year-old Mayweather Jr. easily wins by knockout in Japan exhibition

Boxer Floyd Mayweather of the U.S. throws a punch against mixed martial artist Mikuru Asakura of Japan in Saitama, north of Tokyo, Sunday, Sept. 25, 2022. (AP Photo/Hiro Komae)

Floyd Mayweather Jr. easily knocked out his opponent in the second round of an exhibition match in Japan Sunday, said he had fun and promised to be back next year.

"I'd like to thank the whole country of Japan," the 45-year-old boxing legend, who won all 50 of his professional fights, told a packed crowd at Saitama Super Arena, north of Tokyo.