Interesting article on arm slots on Inside Pitching here:
To summarize, the coach suggests that there are generally two different types of acceptable arm actions for baseball pitchers: 1) “elbow up,” and 2) “down back up.” With elbow up, when the hands separate the throwing elbow moves up into a position even with or higher than the shoulder. With down back up, the throwing hand drops down as the hands separate and extends into a long arc until it reaches its highest point.
Do you agree, disagree? Which method do you use?
I was down back up.