Q #12: One out, runner on first base. The first baseman, while holding the runner, positions his left foot in foul territory. The manager of the team at bat asks the base umpire to call a "fielder's balk". Is this a balk, or not?
A #12: Contrary to popular belief, there is no such thing as a "fielder's balk" under Official Baseball Rules. If a fielder positions himself, or any part of his body, in foul territory before a pitch is delivered, an umpire might direct the player to move into fair territory. However, there is no consequence for this--other than possible ejection if the player blatantly disregards the umpire's instructions. Umpires often overlook this--even in professional baseball.
If the catcher, however, moves outside of the catcher's box prior to the release of a pitch--this is a balk with runners on base. That is why you will always see catchers stand inside the catcher's box and extend an arm for the pitcher to use as a target on intentional walks. The catcher cannot move outside of the box until the pitcher throws the pitch.