quote:Is this automatically an error on somebody since a properly executed run down would have resulted in an out?
From a rulebook standpoint, you can't make that assumption.
OBR 10.08(c) "When a runner, attempting to steal, or after being picked off base, evades being put out in a run down play and advances to the next base without the aid of an error, credit the runner with a stolen base."
Situation #2: the runner didn't advance on the play, so there would be no error. Doesn't really matter what happens on the next pitch.