I have to say, in this game, aggression is what gets you strikeouts. If you want batters to chase pitches out of the strikezone, they have to fear that you will hit the zone for a strikeout pitch. Early in the game, I like to fastballs in the zone for strikeouts to get the hitters in a swinging mode, and that's when you can get them to fish for curves and sliders, but you HAVE to be aggressive. And really, if you have a power pitcher, why would you not want to be aggressive with that fastball?