Legal Defensive play, defender jumps vertically

This is an example of an airborne defensive player maintaining verticality in a legal defensive play. The defensive player here establishes a legal guarding position by being directly in his path prior to the start of the offensive player’s upward motion, and he is in a legal defensive position as he jumps straight up and down in an attempt to contest his opponent’s field goal attempt. The contact on the play is initiated by the offensive player, and since it is incidental, there is no foul by either player on this play. Note that even though the defender was positioned inside the Restricted Area, the defender does not commit a blocking foul because contact is made while he is jumping vertically in an attempt to defend the shot.