Just a reminder, which I provide every season.
No one, I repeat, no one on the field of play can see that silly rectangle superimposed on our screens. Not the pitchers, hitters, umpires (including homeplate), coaches, et al.
Furthermore, we can't even be sure it's the right dimensions because players have different dimensions. Then there's the problem that the strike zone may or not be 3-dimensional. Does only the front edge of the plate count or does the whole plate? On top of all of that, I sometimes wonder if MLB doesn't tell umpires to call strikes tight or loose. If the former, it favors the hitters. If the latter, the pitchers. And of course on top of that is that extra rectangle just outside the one we see. That's the one I get on my gameday graphic sent to me by none other than Major League Baseball.