[AtlUmpSteve]

OK, this is often a point of misunderstanding how two different (but not necessarily opposite) rules interact.

If a batter is contacted by a batted ball while in the batter's box, the call is foul ball; no matter where in the batters box the batter is contacted.

But, any batted ball that is untouched by the batter is judged fair or foul based on an extended line from the back point of home plate to either first or third base. The batters box is immaterial, either fair or foul on those extended lines.

True in every softball ruleset, true in every baseball ruleset. Period.