Official Rules of Softball

International Softball Rules


Sec. 29. FOUL BALL.
A foul ball is a legally batted ball which
a. Settles on foul territory between home and first base or between home and third base.
b. Bounds past first or third on or over foul territory.
c. First touches on foul territory beyond first or third base.

In other words.

1. In the infield, it is where the ball ENDS UP.
2. In the outfield, it is where the ball lands.