Youtuber Logan Paul has outweighed Floyd Mayweather and sent an ominous warning ahead of their exhibition bout on Monday (AEST).
The "ceremonial" weigh-in on Saturday produced no surprises with the 6 feet, 2 inches (1.88 m) Paul always going to have an advantage on the scales coming in at 86kgs with the 5-foot, 8-inch (1.73 m) Mayweather checking in at 70kgs.
While many were expecting fireworks at the weigh-in, which was the case when Jake Paul stole Mayweather's hat at a media conference, Paul was rather subdued and appeared focused on his task.
But the only way Paul can be declared a winner is through a knockout.
The rules, which caused outrage, feature no judges ringside and is scheduled for eight rounds at Miami's Hard Rock Stadium.
Despite having no judges or official winner, a knockout is allowed during the fight which has already seen tickets being offered for well into the five figures on the online resale market StubHub
However, Mayweather has already ruled out any chance of a Paul surprise.
"I've been here before, I know what it takes, I've fought every different style you could possibly fight," Mayweather said.
"Weight don't win fights, fighting wins fights ... at the end of the day and I can fight.
"One thing I can do I can fight. I've been at the top level for 25 years so I know what it takes."
Mayweather hits out at Paul
Paul, whose ring record stands at 0-1 after losing an exhibition fight to a fellow YouTube personality, took only one shot at the unbeaten Mayweather (50-0) during a tame weigh-in and even that was a glancing blow that the champ laughed off.
"He's not ready, he don't know what to expect," declared Paul.
"And this is not the biggest fight of my life, this is the biggest fight of his life because he's got a lot on the line, everything to lose. I'm going to have fun."
"The fact I am even up here proves this is a simulation, none of it is real, the aliens are coming in June ... just be ready ... tomorrow I bring the simulation and beat the greatest boxer in the history of planet."
When is Logan Paul v Floyd Mayweather?
The main event is expected to kick off at 10am Monday (AEST) with the bout between Mayweather and Paul expected to start around 12pm.
Watch 'Mind Games', the new series from Yahoo Sport Australia exploring the often brutal mental toil elite athletes go through in pursuit of greatness:
Click here to sign up to our newsletter for all the latest and breaking stories from Australia and around the world.