From the help guide: For example, if you set your manager's argumentative rating to a five he is highly likely to contest a call at a pivotal point in the game. In this case, if he argues the call his players immediately receive a ratings boost for that half inning. However, if he is ejected, the bench coach must take over for the remainder of the game. Bench coaches use the default neutral managerial settings. Also, having an argumentative manager will increase the player's temper rating.