Obstruction Protection

[mbyron]

Originally Posted by Caesar's Ghost

Not true. Once the runner reaches the base he would have been awarded, the obstruction is ignored. You can have post obstruction evidence, of course, but that's going to apply to awarding additional bases. If the runenr decided to retreat, the obstruction isn't reinstated.

Agree. When R1 acquires 3B, the obstruction has been nullified, the mandatory minimum 1-base award has been satisfied, and we're done with the OBS.

If that runner then (idiotically) chooses to return to 2B during live-ball action and is subsequently tagged out, that out stands. The runner doesn't get 3B, come what may. Had he been tagged out immediately after rounding 3B, that out would have stood, too, and for the same reason: the awarded base has been acquired.