Rule 4 – Section 2 – Article 3 – Loose Ball Out of Bounds
a. A ball not in player control, other than a kick that scores a field goal, is out of bounds when it touches the ground, a player, a game official or anything else that is out of bounds, or that is on or outside a boundary line.
b. A ball that touches a pylon is out of bounds behind the goal line.
c. If a live ball not in player possession crosses a boundary line and then is declared out of bounds, it is out of bounds at the crossing point.