Easy Money: Floyd Mayweather blows away Tenshin Nasukawa with first-round TKO at Rizin 14
Mayweather entered the arena wearing a surgical mask, and his performance was certainly clinical, as he demolished undefeated kickboxing ace Nasukawa.
Mayweather weighed in 10 pounds heavier than Nasukawa and looked considerably bigger than his opponent when they faced off inside the ring at the Saitama Super Arena.
And even though their three-round bout was billed as merely an exhibition boxing contest, Mayweather was clearly in no mood for a boring nine-minute sparring session as he loaded up with punches early on against his young, undersized opponent.
Mayweather dropped Nasukawa three times in the space of two minutes in the opening round before the Japanese fighter's corner threw in the towel to spare their man any further embarrassment.
The fight, as most pundits predicted, was a complete mismatch, with Mayweather pitting his 50-0 boxing skills in a boxing contest against a kickboxer who weighed considerably lighter than him.
But Japanese MMA promoters Rizin happily booked the matchup, with Mayweather reportedly earning a fight purse in the region of $9million.
It was almost certainly the easiest $9million the American has ever earned.