BOO and placing runner(s)

[HugoTafurst]

FWIW:
As I understand things, this is one rule that is different in the three rule sets that I am most familiar with.

In all cases, proper batter is declared out.
Any runners not put out are returned to their base at the time of the pitch.

1) NCAA: No outs (recorded during playing action) stand
2) NFHS: Outs (recorded during playing action) stand EXCEPT for improper batter (her at bat -and therefore her out - is negated).

The improper batter's
time at bat is negated and she is returned to the dugout/bench area. All
outs stand and runners who were not declared out must return to the base
occupied at the time of the pitch.

3) ASA: All outs (recorded during playing action) stand (including an out on the improper batter - so you can get three outs on this....