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His elder brother is set to take on the undefeated American boxer in a long-awaited exhibition match in February.
But not everyone's confident he'll come out on top - including his very own family.
Speaking to TMZ, Jake was asked how Logan could beat Mayweather when boxing legend Manny Pacquiao was unable to.
"No, I agree," he said.
"My brother's f*****. It's bad for the sport. I think it's just for clout."
For context, YouTuber Logan is yet to win a fight, having drawn in his clash with fellow vlogger KSI and later losing a rematch by a split decision.
His brother Jake, meanwhile, recently managed to defeat NBA player Nate Robinson, knocking him out in two rounds.
Jake added: "My brother's a fake fighter, I'm the real fighter. He's 0-1-1, I'm 3-0.
"I wish him the best of luck. I just like... don't get in there with a guy who's never even been knocked out. He's been knocked down once and it was by accident."
Mayweather announced the fight last month, having previously said he wanted to take part in more exhibition fights as opposed to making a comeback.
The undefeated, 50-0 boxer will officially take on the YouTuber on pay-per-view on 20 February 2021.
And it seems Jake Paul isn't the only one doubting Logan; Mike Tyson also doesn't think he's got it in him.
Speaking on Logan Paul's podcast ImPaulsive, Tyson was asked by co-host Mike Maljak for his take on the upcoming fight between Paul and Mayweather.
He answered: "Floyd's gonna beat his f**kin' a**."
Oooof. Tyson did have something nice to say, however, adding: "But it's gonna be good!" he continued.
"It's gonna be good, he's gonna fight back though!"
In a recent post-fight interview, Tyson also thanked YouTubers like Logan Paul for pushing the popularity of boxing.
"Listen, my ego says so many things, but my reality is they help boxing so much," Tyson explained.
"Boxing owes these guys. They owe these YouTube boxers some kind of respect. They should give them some belts because these guys make boxing alive.
"Boxing was pretty much a dying sport. UFC was kicking our butts, and now we got these YouTube boxers boxing with 25 million views. Boxing's back. Thanks to the YouTube boxers."
Featured Image Credit: Instagram/Jake Paul
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