I thought that this is no longer existing so as he retires, it means that there are still ongoing operations with these fixed matches. Well, the money is big and they can live happily by just sitting while watching their money comes to them with those matches that they fix.
Aside from fight fixing, I remember the story of Michael Jordan when he's approached by a mafia to let the game lose but he declined, and then, a tragedy happened.
Those are the things that this mafias can do, aside from offering huge amounts of money, they are also using kinds of things that players/fighters are unable to resist.
Those past headlines that includes MJ's father are really controversial, some might not been reported but it's really happening.
Those fixers and those mobs are circling around the gambling places waiting for the next target that will generates huge amounts
of money that will move anyone once they've start working on it.