The only point I am trying to make is that we are not qualified, from this perspective to determine if an umpire if failing. If it was a safe/out call then fine, you can see that. With calling balls and strikes, you can't tell from TV. Everybody who watches baseball thinks they are a qualified evaluator of umpires, most are not. You are a teacher also, what do you think when parents, or anyone outside of your profession tries to evaluate your skills? The umpire's job is both to call the strike zone accurately and predictably. As a half dozen people have told you, whether or not he's doing the first, he's failed the second