Sportsbetting has resulted in a number of scandals in sport, affecting the integrity of sports events through various acts including point shaving (players affecting the score by missing shots), spot-fixing (a player action is fixed), bad calls from officials at key moments, and overall match fixing (the overall result of the event is fixed).
Examples are the 1919 World Series, the alleged (and later admitted) illegal gambling of former MLB player Pete Rose, and former NBA referee Tim Donaghy.