I’ve made this comment on at least one previous thread but I think it bears repeating.
I do not see the point of a challenge system for balls and strikes calls. It seems just silly. In the event of a challenge the electronic call stands, which makes two points. One, there’s no reason not to simply use the electronic call in the first place. Two, by defaulting to the electronic call baseball is acknowledging that the electronic call is more likely than the human call to be correct, and probably significantly so. And both these points argue in favor of the implementation of electronic calls for all MLB games beginning in spring training of 2024.