I could write pages about how DMB has helped me learn - the hard way - about strategy. The thing is, just like the real thing, there is no silver bullet. Sound baseball tactics work in DMB mostly as they do in real life.

That said, are you playing in pitch-mode? I think it's much easier to sense when a pitcher is done in this mode than in batter-mode, which may cause you to stick with pitchers too long.

Otherwise, more specific examples will draw more specific suggestions.