JD our starting SS last year was also our #1 pitcher. He was drafted as a RHP last year. Early in the year we play three games a week. Our schedule would be Tues , Thurs , Fri. On these weeks he always pitched on Fridays. This way he was on three days rest before he played SS again. When our conference schedule starts we play Tues , Fri. He always pitched the Friday game in conference so again he was on three days rest before he had to play the field again.
Since he was a pitcher his schedule ie running , band work , bull pen etc was his priority over posistion play work. We understood that pitching was his future and we didnt want to do anything that was going to hinder or hurt his ability to be the best he could be at his #1 posistion.
If for some reason he pitched between games during the week he always played 1B. I do not believe it is right to put a pitcher on less than three days rest in a posistion to make those kind of stressful throws in game situations. Plus they need that time between starts to properly prepare for the next outing.