Missed first base and then tagged

[UmpJM]

Pete B.,

Let's say in the initial sitch, there were two outs and an R3. The play happens as described and the R3 scores before the F3 tags the BR as he is returning to the bag. Both the BU and F3 saw the BR miss the bag as he passed it.

Does the R3's run count?

If it's "just a tag out", it's a timing play and the R3 scores. If it's a 7.10(b) missed base appeal, it's a run-nullifying third out and the R3 doesn't score.

That's why I think it's not just semantics.

JM