Logan Paul outweighed Floyd Mayweather by 45lb as the unlikely dance partners faced off for the last time before they touch gloves.
The YouTube star and the ring legend will clash over eight rounds in Miami on Sunday night in an exhibition bout.
And Paul will have a considerable height, weight and reach advantage over his opponent after scaling 189.5lb
In doing so he avoided a financial penalty having claimed he would be fined $100,000 for every pound over 190lb.
Mayweather, meanwhile, weighed in at 155lb, heavier than he did for any of his professional fights.
He will not be putting his precious 50-0 record on the line against Paul who has fought just once as a professional – losing to fellow social media star KSI in 2019.
Indeed, there will be no winner announced at the Hard Rock Stadium – but knockouts are allowed, and the referee can stop the fight at his discretion.
Mayweather has not been seen in the ring since he stopped Japanese kickboxer Tenshin Nasakawa in 2018 in another exhibition bout.
He previously stopped two-weight UFC world champion Conor McGregor to bring up his half-century of victories.
But Paul’s meagre ring experience has not stopped him talking up his chances to knocking out Mayweather.
“I think I’m going to go in there and decapitate him in the first round,” he said. “If it doesn’t happen, we’ll go for the second and then the third, and the fourth.
“Who knows it could go the distance, but it’s going to be a f***ing show regardless.”
“Anything can happen. Mentally, I prepare for the best and I prepare for the worst.
“For those people telling me that it’s impossible, you’d be lying if you said there wasn’t a chance that I could beat him.”
Mayweather has been more candid about the bout, however, branding it a “legalised bank robbery” for which he expects to earn at least $50million.
“My nickname is ‘Money’ for a reason,” he said. “I believe in working smarter, not harder.
“So if it’s something easy like a legalised bank robbery, I’ve got to do it. I have to do it.”