Does the run score?

[AtlUmpSteve]

I could be wrong, but I see a difference between this play and a walk. In both a four base award, and a homerun, all runners are awarded all bases, forced or not, as long as they do not violate a baserunning requirement (missing a base, or passing another runner). So, since the baserunners (R1, R2, and R3) are awarded home, they score. Batter is out; not a timing play on the dead ball, awarded bases score as awarded, as long as they precede the runner that made the third out.

If R3 passed R2, then only two score. Etc., etc., etc.

On the walk, only the batter is awarded 1 base. Unforced runners advance at their own risk; forced runners are not awarded a base, they are simply advancing without liability to be put out. That is a timing play, live ball, and if they do not score before the third out is made, they do not score.

IMO.