It is frustrating, but unless you have been behind the plate it's not as
obvious as you think. How the ump positions himself creates angles that
can lead to calls not matching a computer generated strike zone.
The most important part of umpiring is being consistent. I always told the
coaches I had a high stroke zone and to let the players know.
But believe you me, I yell too when I think it's a bad call.
Plus, we wouldn't be able to say an ump is a "homer" or "Overs" ump
if it's a damn computer! :missingte