[ofishe8r]

I'm a high school baseball coach and have a rules question about the set position. My pitcher was taking the signal with the ball in his glove and his pitching hand at his side. As he was taking the signal his throwing arm moving in a slight swinging motion (like Pedro Astacio), the plate umpire called a balk, saying that his pitching arm had to remain perfectly still. We challenged the ruling and showed him in the rule book that the arm never had to be completely motionless, just down at the side or behind the back. The slight movement was never deceptive and was a consistent movement. I have never had this called in 25 years of baseball coaching and umpiring. What do you think? Thanks.