That's pretty crazy. One of the most controversial split decisions ever happened very recently. Adrien Ward vs Sergey Kovalev. Kovalev clearly won, but the judges gave Ward a win. I was shocked, and so I pissed off since I lost money. Those fucking American judges need to be fired.
Boxing had more scandals and match fixing than any other sports in my opinion.They have different governing bodies and there was a scandal where IBF President was selling ranks for money 
Jake LaMotta incident is another thing,so i am sure these matches are fixed and if you are lucky you win the bet 
Klitschko Vs Josua is held in London and if that is the case Josua has the advantage here unless and until Klitschko KO him.
The good thing about boxing is it's pretty obvious when a fight is fixed. Adrien Ward vs Sergey Kovalev is an example of an obviously fixed fight where judges had priority on Adrien Ward winning, so as long as Adrian Ward didn't get KOd it's clear that he had a guaranteed win.
Those usually always put pressure into the winner to fight again tho.