Infield Fly if you don't call it immediately

[DaveASA/FED]

I understand your point, but I don't think I agree with you. I have always been taught to add this if the pop up is near the line. You can't tell if it will be a fair ball or not when it is still in the air before 1st base! What if the first basewoman is camped under it and gets blinded by the sun and misses the ball, it hits 2 foot in fair territory then backspins into foul ground (never having been touched) where it is picked up? That would not be an infield fly as it was just a foul ball. I am interested to hear what others think about adding the "if fair" when an IF is close to the line.