The iconic five-weight, 15-time former world champion takes on Mikuru Asakura, a YouTuber and mixed martial artist who competes in the Rizin Fighting Federation.
It’s a three-round affair that Mayweather says will earn him more than $20 million, with knockouts allowed, but a no contest is decided if it lasts the distance.
“Money” produced a demolition job on his last visit to Japan, dropping kickboxer Tenshin Nasukawa three times en route to an emphatic first-round stoppage that left his opponent in tears.
Since then, he’s eased off in the shows, going the distance without contest against internet celebrity Logan Paul and former sparring partner Don Moore.
Next on Mayweather’s agenda is a clash with KSI’s brother Deji in November, as he wants to meet UFC superstar Conor McGregor in a competitive rematch next year.
Here are all the details on how to watch tonight’s exhibition contest.
How to Watch Mayweather vs. Asakura
TV channel and live broadcast: Saturday’s event is broadcast live on US digital video streaming service Fite TV, including in the UK.
Price Mayweather vs. Asakura PPV
The event will cost $19.99 (£17.73) to purchase.