Where did the OBS occur?

[jack2005]

Sounds like a league ball game. Reading through the ASA rule book concerning this issue and applying to this situation; I agree with returning the runner to 1st base. Although I would not make this a normal routine. In my opinion coaches will continue to send the runners onto the next base merely because the fielder is standing on the base.

The runner made it to first base no problem. But continuing to run to another base and in your judgement would not have reach 2nd unobstructed or not, then the runner should have been called out.I really think the obstruction must occur between the bases.