Rick wrote:

<i>OK, still being case book deficient, what is the reasoning for this? That runner on 2nd (R1) has gotta go somewhere.</i>
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Not until the defense wakes up and does something and Blue
cannot wait all night.
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<i>By rule, she can't stay on 2nd, since it was already occupied and no force was in effect on this play. Following this line of reasoning, she has to go somewhere legally, and that can onlY BE 1st.</i>
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Exactly, but it is not up to the umpire to tell the defense
this, sooooo if there is no action, kill the play and send her
to 1B.
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<i>Soooooo, why is the LBR negated? Because she's on a base?</i>
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Yes, because she is on a base. You, as the umpire cannot call her
out until the defense does something.
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<i>By rule, she can't stay on that base! She has to go back to 1st.</i>
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Exactly, and that is what you as the umpire, are going to do
since the defense has done nothing. You, as the umpire, have
given the defense every opportunity to do something with the
situation. Now you take over, call time, and send her back to
1st.

Personally, I have never seen this play. I have seen 2 runners
on the same base, but the defense knew how to handle the situation.

thanks for all the great discussion ... i'm confident now that my partner and I handled the play correctly.