A disc is out-of-bounds when it first contacts an out-of-bounds area or contacts anything which is out-of-bounds. The disc in flight may pass over an out-of-bounds area and return to the playing field without being declared out-of-bounds so long as it does not contact an out-of-bounds area or anything which is out-of-bounds.
Defensive players may go out-of-bounds to make a play on the disc.
Receiving players may not go out-of-bounds to make a play on the disc. For a receiver to be considered in-bounds at the time of gaining possession of the disc, the player's first point of contact with the ground must be completely in-bounds. If any portion of the first point of contact is out-of-bounds, the player is considered out-of-bounds.
A player is out-of-bounds whenever he or she is contacting an out-of-bounds area. When a player is in the air, whether he or she is in or out-of-bounds is determined by where he or she last contacted the ground.
In the event the momentum of a player carries him out-of-bounds after making an in-bounds reception, the player is considered in-bounds. The player shall resume play at the point he or she went out-of-bounds.
To restart play after the disc has gone out-of-bounds, a player of the team gaining possession of the disc shall carry the disc to the point on the playing field proper closest to the point where the disc went over the perimeter line, and establish a pivot foot at that point, not within the perimeter line, before putting the disc into play. The opposing team gains possession of the disc where it left the field of play only if the defense did not subsequently contact the disc. If the defense contacted the disc, the disc must be put into play at the point on the playing field proper closest to where the contact occurred.
The thrower may pivot in and out-of bounds without being declared out-of-bounds, providing that some point of his or her pivot foot is in contact with the playing field.
Endzone Possession