[rockyroad]

Originally Posted by M&M Guy

In fact, check out rocky's play - 10.6.1 Sit A (b). It doesn't mention anything about whether B1 is in the path, moved into the path, moved out of the path, etc., only that B1 moved to a new spot. But since A1 was no longer airborne, it was a foul on A1.

This is what decided it for me...and so the flip side must be true. If A1 was still airborne, it would be a foul on B1 because he/she moved to a new spot after A1 was airborne.