Does the run count?

[Illini_Ref]

Originally Posted by bob jenkins

Does BR just "over run" first? Then no run scores. The tag is the appeal.

Does BR round first? Then score the run unless / until there's an appeal.

What do you mean by "until there's an appeal"? Do you mean that if a BR round first, but misses the base and is subsequently tagged when returning, then the run is wiped off when the appeal is granted successfully? If the defense just makes the tag and runs off the field then you count the run? I'm guessing if it isn't obvious what they are doing then you assume they are not appealing. If they make the tag and then say "he missed the base", then you wipe off the run?

Why is there a difference between rounding and overrunning? The rule says before the batter-runner touches first base.