Obstruction - to what base?

[FUBLUE]

The whole concept is to protect the runner to the base she would have reached if not obstructed. If Wanda would have reached third, IN YOUR OPINION, then she gets third. If LuAnn would only have made second, giver her second. Heck, if she's really slow, maybe she would only have reached first safely (had there been no obstruction). It's all a judgment call based on your judgment of the runners ability.