Not only an expert, that answer should come from the authorities investigating the case thoroughly, questioning every party involved and draw their conclusion from those findings.

This is the issue being discussed and repetitively pointed out here, one can easily say the match is rigged according to their opinion, be it through educated guess, a comprehensive study of the match pattern frame by frame, a random rambling, or whatever, they have the capability to draw that conclusion, but no one other than the authorities appointed by the officials of that league has the capacity to draw it.

I believe this is also the reason why AG refuses to mediate. They have experts who are fluent in mediating as well as finding and validating evidences, but they are well aware that they have no capacity to rule a game as fixed.

For someone who goes to a length to make a --by your own words-- teaching post to correct everybody here, because no one seemed right in the thread, you seem failed to read that issue being pointed out through several replies.