LoveMe2Times writes "Former NBA referee Tim Donoughy pleaded guilty to charges related to his gambling on NBA games, including those he officiated. While many suspected him of fixing games or altering the outcome of games he officiated, the real story — that the mainstream media only mentions in passing — is that he didn't need to fix games. As a ref, he had access to "non-public" information about the games, including the real nature of injuries, who would ref the game, and the extent to which those refs favored the players. This inside information was enough for him — and presumably any NBA insider — to pick winners with enough accuracy to get paid $5000 for correct picks. In other words, referee bias is statistically significant enough for those in the know to make lots of money betting on it. In essence, the referees decide the game more than the players in a known, predictable way; hence, the game is fixed by choice of refs for a game."
Link to Original Source