Batting Out of Order, Volume 2

[MD Longhorn]

The "before they leave the infield" part is to cover the case where the wrong batter hits a walk-off OR the case (odd but possible) where they get the 3rd out on a play where the wrong batter had batted, and for whatever reason (possibly to save a run, possibly to put an advantageous hitter up first in the next inning) they want to appeal the BOO anyway.

[youngump]

Originally Posted by MD Longhorn

The "before they leave the infield" part is to cover the case where the wrong batter hits a walk-off OR the case (odd but possible) where they get the 3rd out on a play where the wrong batter had batted, and for whatever reason (possibly to save a run, possibly to put an advantageous hitter up first in the next inning) they want to appeal the BOO anyway.

Yes but the rule says if appealed before A or B. What it means to say if it's before either of those things happen. But taken literally it was appealed before one of the two things happened. My point here was that the rules are poorly written and you don't want to hang too much on the finer points of their wording.