Each player is entitled to occupy any position on the field not occupied by another player.
B
.
XI.B
Picks: No player may establish a position, or move in such a manner, so as to obstruct the movement of any player on the opposing team; to do so is a pick.
C
.
XI.C
When the disc is in the air, players must play the disc, not the opponent.
D
.
XI.D
Each player has the right to the space immediately above him/her. A player who has jumped is entitled to land at the same point of take off without hindrance by opponents.