Mechanics review

[DaveASA/FED]

I guess I'm not sure what you are looking for here. The fielders position has ZERO to do with whether I would call OBS or not. Granted their are positions that make OBS more likely, but a fielders position alone will NOT get an OBS call. The runner has to be hindered or impeded to get an obstruction call.

Lets say this runner is leading off at an angle toward right center to have a path to round 2nd base on a deep hit, they may come back to 1B behind that fielder that has both feet on the 2B side of 1B and not be hindered or impeded at all, so no obstruction call. Conversely they may be completely behind the base but R1's chosen path to return to 1B has to be altered to get back to 1B, in this case I have obstruction.

Again, not sure what point you are trying to make (but would like to understand) but position of the fielder alone should never draw an automatic OBS call. And positioning of the fielder should never protect them from having OBS called on them. Bottom line any time a fielder without possession of the ball, and not in the act of fielding a batted ball (ASA) (or making an initial play, in NFHS) hinders or impedes a runner obstruction should be called.