[greymule]

I do not know the answer, but I'll take a stab at it.

We know that if the BR rounds first and is tagged out, the runner on 3B still has the right to score.

However, if the BR is put out before he reaches 1B (say, by entering DBT), then no runs can score. In another example, should ball 4 get away from the catcher and all runners and the BR advance two bases, if the BR missed 1B and the appeal was upheld, no runs could score.

But in the play in question, the runner doesn't miss 1B and proceed to 2B. He dives over the base and misses it. He's still liable to be tagged out on appeal (but it seems like the kind of play where the defense could not simply touch 1B and appeal). I would say that since BR never reached 1B safely, no run could score.

On the other hand, there is some dispute concerning whether the out at 2B is considered a force out in the play where the runner overslides on a force play, beats the throw, but misses the bag and is tagged out. nine01c's play is somewhat similar to that one. In terms of whether the out would nullify a run, doesn't PBUC call that play one way and J/R or somebody call it the other way?

So in nine01c's play, I'll say no run. If I'm right, I'm going to try out for the Ninth Circuit Court of Appeals.