The best defender does not make the best team. You defended a move by saying you have to trust the players. Making a change already indicates you don't trust your players, and simply trusting them is not justification enough for making the move. You have to make the best move for the team, and often times in baseball, that is no move at all. A defensive upgrade is not necessarily the best move just becasue it's a defensive upgrade. There are other factors to consider, and you can't dismiss them simply by saying you trust your players to make those other factors moot. For most of the game I agree with you. But if I have a lead in the ninth, I'd certainly be more inclined to put the better defender to help keep that lead. i think that the benefits of doing that are negligible at best. the chances that the player at said position will make an error to cost the team the game are far less than the chances that the opposing team will tie the score through hitting a home run or driving the ball into a gap, thus making it likely that the player in question will have to come to bat. OK, but why take the risk?