In what order do you call?

[AtlUmpSteve]

I don't think anyone can dispute that, from time to time, a differing mechanic has been taught at an ASA clinic. I am quite positive that the official stance of the NUS for as many years as I can recall has been to not verbalize an obstruction. Generally, players will stop play whenever they hear anything from an umpire other than "Safe", and the standard concept is to allow play to continue as naturally as possible. Only then can we truly award "what the result of the play would have been had there been no obstruction". The base coaches should be looking for the signal, and advise the base runners appropriately. We should not cause the runner to change their focus from the coach or their running responsibilities to distraction from our call; then we add to the issue of what might have happened absent the obstruction and absent our distraction.