Had a play this spring where batted ball goes over the RF head. P heads toward 3B to get in position to back up throw to 3B coming from OF. 3rd base coach had been basically on top of the bag, then tries to hurry back, colliding with the P, sending her hard to the ground. Throw gets by the 3B, and batter runs home because no one in backup position. Is this interference? At the time the coach leveled the P, she wasn't attempting to field a ball, but rather attempting to get into position to be able to field a ball if the intended recipient missed it.