3. Hansie Cronje's death in air crash
The cricketing world was shocked to its roots when the South African captain, recognized as one of the nice guys of the game was fingered for match fixing.
He was banned for life. Two years later, his death in a plane crash sparked off the conspiracy theorists.
Whatever the truth, Cronje was a very powerful figure in South Africa and may have been on the verge of naming names involved with the betting syndicates.
People stood to lose a lot of money. The death of Bob Woolmer at this year's world cup, and the accusations that followed, no matter how false, proves this matter will not lie.