Sometimes you have a scouting report that gives you insight into what a hitter can hit. Sometimes the hitter gives you information by how they stand, what their warm up swings look like, or where they are in the batter’s box.
We know nothing about this hitter! What now?
You can usually figure a hitter out by attacking them with opposites. If you throw pitch one high and tight then go with pitch number two low and away. See how they react and adjust appropriately!
I always attack inside first, with speed and movement. Most hitters are passive early in the count, we get ahead, or if things really work well, we get an easy out early in the count.
When in doubt, pitch to opposites!