Is it really gaming the system? Real life ML clubs have the option to do this, without some weird buggy fatigue penalty, but it never happens, because it makes no sense to do this in real life, with the exception of some very exceptional circumstances. If they want to make it so that you can't have prospects make their debuts in the post season, they could go ahead and make it so. But they won't, because there is no rule against it in real life. This game is meant to simulate real life MLB, is it not? I mean if your team makes the playoffs, but one of your important players goes down with an injury on the last day of the season, why should you be punished by this BUG, if the guy that you would have used from the minors is still sitting at %91, even though your AAA team has been doing nothing for two weeks?