If someone bet Jake Paul vs Mike Tyson and believe the match will going to serious, they're made mistake. You can't really know which one will win because it's an exhibition match, so I won't be surprised if Jake Paul will win.
So I happened to watch a UFC related movie yesterday and the main character is a very strong one who never loses a fight but during a fight he decided to lose the fight, I found out that he did it intentionally because his uncle and his uncle's friend bet a lot on the biggest odd, which is the other fighter.
I believe this is illegal in professional match, the player must not intentionally lose the fight and his relatives must not bet on his match. That's why most casinos ask KYC to prevent from this kind to happen.