Tenshin is a professional kickboxer in Japan, and he's just only 20 years old. It's an impressive resume for one so young, but it doesn't matter in a boxing ring against a legend, even an odious one who is well past his prime. That's why Tenshin was knocked down three times before finally conceding in the first round.

Floyd Mayweather def. Tenshin Nasakuwa in the first round. Mayweather knocked him down 3 times in 2 minutes and then Nasukawa’s corner threw in the towel. Mayweather toyed with him throughout. Was never in danger and danced when the fight was over.

"It was all about entertainment," Floyd said after the brief fight. "We had fun. Tokyo, you were amazing, but I'm still retired. We're both still undefeated. Tenshin is still a champion and a great fighter."

Floyd claims to have earned $9 million for the exhibition, bragging that it was a million dollars a minute for a "walk thru." 

It all went down on New Year's Eve (yeah, they're ahead of America) in Japan's Saitama Super Arena as part of RIZIN's MMA card. The exhibition was composed of three, three-minute rounds, but then it only lasted one. However, Tenshin was Harrison Bergeron, unable to use the kickboxing skills that prompted the fight in the first place.

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And if you're wondering why Floyd isn't fighting Khabib Nurmagomedov any time soon, it's the boxing caveat Floyd first put on a Conor McGregor, before unloading on a fighter, Tenshin, robbed of his skills. Mayweather remains a coward, though a profitable one.