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A team must consist of at least six and can have a maximum of 14 players. If there are seven players, no or a libero can be named. From eight to twelve players, a maximum of two liberos may be named. If there are 13 or 14 players, two liberos must be named. The libero(s) must be noted in the player list as well as in the column "Libero Players ("L")".
Permitted team compositions:
|6 players||no libero|
|7 players||no or one libero|
|8 to 11 players||no, one or two liberos|
|13 or 14 players||two liberos mandatory|
If one team has named two liberos, both of them must wear same coloured jerseys with different numbers. The predominant color of the libero jerseys must be clearly distinguishable from the jerserys of the rest of the team.
A libero may only be used on one of the backfield positions (5, 6, 1). A libero cannot be the team or game captain.
A libero can be replaced by his regular replacement player or by the other libero.
There must be one completed rally between to replacements. If there is an incomplete rally, i.e. the rally has to be replayed, no replacment is posible, with the exception of an illness or injury.
Higher than the top of the net means, that the ball is completely higher than the top of the net at the moment the ball is hit by the attacker.
f the last remaining libero becomes unable to play (injury, illness, expulsion, disqualification, request by the coach), a new libero can be named. Any player who is not on the court (and is not the replacement player of the libero) can become the new libero and may replace the disabled libero.
Self-determined inability to play (request by the coach)
If the libero is on court, he must be replaced by his replacement player first. A re-designated libero can then only replace another player after a completed rally.
Under no circumstances can a libero participate in the match again, if a new libero has already been re-designated!
The new libero must play in a jersey that differs from the rest of the team in the basic color. If no jersey is available, a T-shirt, an overshirt, a bib etc. can be used.