I believe that this is still happening and it depends on the game if they are going to apply that kind of manipulation.
When it comes to money or gambling, they are going to do everything just to earn money. Mostly the MAFIA's are doing this.
And they are earning that easily.
Yes of course this still happens. Only on rare occasions though so the chances of the sport being manipulated is low.
There is no easy way of making a profit from gambling, simply because it
is gambling and it involves risk. However, given that you have the right information, you can reduce those risks but never fully remove them.