In small sports leagues, including eSports, there are often cases where fixed matches are made, in which not a team participates, but one player who will pretend that he is very fit today and thus will drag the whole team to defeat. Such cases are known in small tournaments in Dota 2, and I think you know all the cases in small football leagues.
There are films about the investigation of such cases, which even show the correspondence of the compromised player with the customers.

In small sports leagues, including eSports, there are often cases where fixed matches are made, in which not a team participates, but one player who will pretend that he is very fit today and thus will drag the whole team to defeat. Such cases are known in small tournaments in Dota 2, and I think you know all the cases in small football leagues.