13.1.1 All actions which direct the ball towards the opponents, with the exception of service and block, are considered as attack hits.
13.1.2 During an attack hit, tipping is permitted only if the ball is cleanly hit, and not caught or thrown.
13.1.3 An attack hit is completed the moment the ball completely crosses the vertical plane of the net or is touched by an opponent.
13.2.1 A front-row player may complete an attack hit at any height, provided that the contact with the ball has been made within the player’s own playing space (except Rules 13.2.4 and 13.3.6).
13.2.2 A back-row player may complete an attack hit at any height from behind the front zone:
13.2.2.1 at his/her take-off, the player’s foot (feet) must neither have touched nor crossed over the attack line;
13.2.2.2 after his/her hit, the player may land within the front zone (Rule 1.4.1).
13.2.3 A back-row player may also complete an attack hit from the front zone, if at the moment of the contact a part of the ball is lower than the top of the net.
13.2.4 No player is permitted to complete an attack hit on the OPPONENT'S service, when
the ball is in the front zone and entirely higher than the top of the net.
13.3.1 A player hits the ball within the playing space of the opposing team (Rule 13.2.1).
13.3.2 A player hits the ball “out” (Rule 8.4).
13.3.3 A back-row player completes an attack hit from the front zone, if at the moment of the hit the ball is entirely higher than the top of the net (Rule 13.2.3).
13.3.4 A player completes an attack hit on the opponent’s service, when the ball is in the front zone and entirely higher than the top of the net (13.2.4).
13.3.5 A Libero completes an attack hit if at the moment of the hit the ball is entirely higher than the top of the net (Rule 19.3.1.2).
13.3.6 A player completes an attack hit from higher than the top of the net when the ball is coming from an overhand finger pass by a Libero in his/her front zone.