What do you think about simulated innings as a tool to help improve concentration and focus?
By that I mean throwing pitches and keeping track of at least balls and strikes and pitching until you have "struck out" three batters.
How are you ever going to get out of a 3-0 hole with a batter in the box if you don't first leanr how to get out of a 3-0 hole when it's just you and the catcher?
At the end of last season, and too late for it to make a difference, I had one of my head cases (but with a huge arm) pitch a simulated inning. He really struggled, and it was just him pitching, me catching, and my son just standing in the batters box (he also has a problem throwing strikes with a batter in the box).
I learned the hard way that you have to evaluate pitchers based on how they pitch with a batter in the box.