In a "clear the bench" situation, the SimEngine will try to use backups and avoid using starters. The most likely players to play at a given position will be ones who are in the depth chart, but set to 0 target minutes. If no one fits that description, the SimEngine will try to find players who are not in the depth chart and have a high Effectiveness rating for the given position. If there aren't any available players who fit that description, then one of the players listed in the depth chart with target minutes may end up playing.