From playing LIVE, I would have to disagree with ozomatli, at least in the short term - when you issue an intentional walk, the pitcher's fatigue does not change. However, it seems to compensate back to normal after the next batter. So for playing LIVE, it sometimes makes sense to walk a guy if your pitcher only needs to record one more out. Very occasionally. But my hunch is that by the 2nd batter, and in terms of seasonal fatigue, the pitches do count.