Infiled Fly, If Fair

[FVB_Ryan]

Me (PU) and my partner (BU) had a situation yesterday that mad for a nice heap of confusion. A play happened, we let it progress and when it was finally over, reversed the call. Heres the sitch: MSBL 28+ -- R1, R2, Less than two outs. Batter hits very short (distance) and high pop up no more than ten feet from plate, on which pitcher seems to be about to make a very easy play on. I signal infield fly, and yell "infield fly, if its fair." Pitcher completely misses it (unintentionally) does not even make contact with the ball. I see the ball land fair, and immediately (this is my BIG mistake of the night) point fair, then signal out. Ball then bounces foul. Runners are going, and to be honest, I got so confused with what was going on, I dont know if R2 crossed the plate, or would have been out on the play, but when the play was over, R1 was R3, and R2 was nowhere to be seen (yeah, I should have been watching for him to cross the plate, but I didn't know what was going on....sidenote, taught me that I have to be alert for everything, even when weird stuff is going on). Anyway, I confer with my partner, and tell him that even though I did signal fair, the ball landed fair, and before it was touched, went foul. We decide and call it a foul ball, strike one, runners return. No one complained. With a full count, on the same batter, I had to call infield fly if fair again, but this time the third baseman caught it. After the game, as my partner and I walked to our cars, he mentioned that he isnt sure, but we may have called that play wrong, that he needs to look it up. I agreed, as that was what was going through my mind during the play. But I wasn't near confident enough to actually make the ruling. This leads me to my question: For the purposes of infield fly rule, Is there any difference in the determination of a fair or foul ball? Is the batter out immediately when the ball lands fair, even if it rolls foul? For some reason, my instincts tell me this is the case, though I cant seem to find that in the rules. (By the way, this was OBR, but if there is any difference in ruling, please cite both OBR and Fed Rules). Thanks in advance for the help.