Floyd Mayweather stopped Japanese kickboxer Tenshin Nasukawa in the first round of their three-round welterweight exhibition match on New Year's Eve.
Mayweather, 41, a former five-division world champion, floored Nasukawa three times before the end of the first round. Nasukawa's corner threw in the towel after the third knockdown, and the 20-year-old was left in tears after being humbled by the retired Mayweather.
Nasukawa was twice dropped with precise left hooks before a short right hand put him down for the third time.
After his quick win, Mayweather insisted it did not change the fact that he is retired.
"It was all about entertainment. We had fun," Mayweather said. "I'm still retired. I don't look forward to coming back to boxing. I did it just to entertain fans in Japan. I'm still retired, I'm still 50-0, and Nasukawa is still undefeated and a hell of a fighter."
