What are the most significant confirmed (i.e. investigated by the governing body and punished) instances of match-rigging in football? When considering significance, please include:
- Level of the match: a World Cup match would be more significant than some Sunday morning pub football.
- Degree of match-rigging: arranging for a team to win is more significant than the time of the first throw-in.
- Effect of the match-rigging: something which enabled the team to win a league is more important than the difference between 12th and 13th place.
- Amount of match-rigging: more rigged matches is more significant.