I also keep a book of every team we play. Before the game, I put the former pitching stats and results on my sheet. I talk to my pitcher and catcher after each inning. I would rather my catcher use his spare time becoming a better hitter or student than having to memorize the batters for the other team. I give them a little ability to shake off but not much. I tell them talk to me and you won't have to shake me off much. Plus I know very few college catchers who call their own pitches so why prepare them for something they are probably not going to do. They have a job and I have a job.