ASA rules:
R1 is on 1B. Batter pops up in foul territory. F3 catches the ball and tags the colored portion of the base beating R1 diving back to the white portion of the bag.
Call on the field is: batter out but R1 is safe because F3 can only use the colored portion of the bag on a throw from foul territory on the batter.
The rule seems to say that the defense can use either side of the bag, but it also refers to the batter runner, which R1 is not...
Whats the call?