Anything with large sums of money is going to have corruption. I do a bit of football gambling but my brother is really into it, and you see patterns in certain games and leagues where you can predict goals within a window of a minute. Lots of Asian leagues, you wouldn't be surprised to hear. The small countries are farcical, even international games up to the full NT. I've seen it happening in the Greek league recently. If punters can see it I don't know why the authorities aren't all over it...