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So, Logan Paul currently has a record of one professional fight which was a defeat to fellow YouTuber KSI, whereas Mayweather is rightly regarded as one of the greatest boxers of all time and boasts an undefeated record after 50 fights.
On top of that, Mayweather has fought everyone from Ricky Hatton to Manny Pacquiao, and even current pound-for-pound number one Canelo Alvarez.
He beat them all, but Logan Paul believes that where they failed, he will succeed.
Speaking in what was definitely not - honestly - an attempt to boost pay-per-view sales ahead of their clash at Miami's Hard Rock Stadium, which airs live in the early hours of Monday morning (7 June) in the UK, Paul said: "He doesn't know who he's getting in the ring with.
"He really thinks I'm a YouTuber, he really thinks I'm a fake fighter and I get it.
"Everything I portray online says the same thing, but we really are about this life now.
"Floyd underestimating me is going to hurt him, I think.
"I want Floyd to bring his belts, all of them because I'm going to knock him out and become the greatest boxer on the planet.
"Then I'm going to retire, buy some land in upstate New York and not give Floyd the rematch."
Of course, Paul has to go into the fight believing he can at least hold his own. It would be completely foolish to take up the bout if he didn't.
However, boasting ahead of the fight might be good for PPV numbers, but it's another thing to then back it up in the ring.
Perhaps he's hoping on bolstering those numbers with people who just want to see Mayweather take it right to him?
On top of that, Paul admitted the other day he doesn't really know what the rules of the exhibition match are.
He told the True Geordie podcast: "I don't know how this is possible but I do not know.
"I'm hearing 10oz, 12oz [gloves]. I'm hearing eight rounds, I'm hearing three minutes, I'm hearing two minutes, I don't f***ing know.
"We're prepared for anything. We did a legit proper camp. We're doing hard sparring rounds, 10-12 rounds, three different guys, we're ready.
"We've got a group of pros [to spar with].
"Some guys are brawlers, some guys are boxers. We try to get guys who can emulate Floyd, or at least keep the pace for small guys."
"Honestly every look we can, we get: pros, solid, solid boxers. I sparred a couple of times, Jean Pascal, who is on the undercard actually. It's great work, tough guy.
"He was already here in Puerto Rico training, happened to be in the same gym and we got a couple of sessions in."
Whether he knows what the rules are or not, he'll find out soon enough when he enters the ring in Miami a few days from now.
Logan Paul vs Floyd Mayweather will be available to watch live through Sky Box Office.