Mike Tyson is expected to be considerably heavier than Jake Paul on fight night.
Paul, who usually operates at cruiserweight (200lbs), will move up to heavyweight for the first time in his career on November 15 to face 'Iron Mike' in a professional bout.
Tyson, a former undisputed heavyweight champion, weighed in as low as 212lbs during his prime.
But Paul has told The Hollywood Reporter that the boxing icon 'will probably be 235lbs' for their fight.
The YouTuber-turned-boxer will come in 15lbs lighter.
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He revealed to the American publication that he is currently walking around at 216lbs while he expects to be 220lbs on fight night.
Tyson is widely considered to be one of the most destructive punchers in the history of the sport.
Given that power is the last thing to go, most feel the 58-year-old's best chance of winning is via an early knockout.
Paul is aware that Tyson will likely approach the fight with this in mind and has formulated a game plan that he believes will counteract this.
Asked what his tactics will be, he said: “To just box on the outside and then use my footwork to be more agile and get him chasing me and then attack him when he’s out of position.
"That should frustrate him.”
Paul vs Tyson is expected to be one of the highest-grossing fights in the history of the sport.
Both men are anticipated to earn somewhere in the region of $40million for the fight, which is being broadcast live on Netflix.
However, Paul has offered Tyson an extra $5m if he is able to survive four rounds with him.
In a video uploaded to the TikTok page for his betting site Betr, he said: “Mikey, Mikey, if you can last more than four rounds with me, I’ll give you an extra $5 million.
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“But, if you don’t, then you have to get a tattoo that says I love Jake Paul. Deal or no deal?’’
Despite the bags of money on the line, Paul insists the crossover clash isn't simply about boosting his bank balance.
Asked why he took the fight in a recent press conference, he replied: “Making history. This is what it's all about for me, man. I'm a kid from Ohio. They'll never give me credit.
"That's the way it is. If I was walking on water, they would say it's because I couldn't swim.
"And this is to make history. The people think I'm going to get knocked out by this strong, powerful guy.
“All the people in my comments say, ‘look at his power. He's going to get KO’d.’
"This has taken a chance to fight somebody as vicious as Mike can be. You got to risk it for the biscuit. That's the name of the game.”