There was a post before about results posting before the game actually says the match is over. I believe of the idea that there are different periods of the game that are reset and simulated out. So for the first 15 minutes, the results are determined, then when 15 minutes hits, any changes that were made are put into account and the next 15 minutes are simulated. And so on and so on until 75 minutes, and then after that no changes you make will matter because the end has already been simulated