Volleyball is a team sport in which two teams of six players are separated by a net. Each team tries to score points by grounding a ball on the other team's court under organized rules. The complete set of rules is extensive,  but play essentially proceeds as follows: a player on one of the teams begins a 'rally' by serving the ball tossing or releasing it and then hitting it with a hand or arm , from behind the back boundary line of the court, over the net, and into the receiving team's court. The team may touch the ball up to 3 times, but individual players may not touch the ball twice consecutively.
Welcome to Libero!
The libero is impossible to miss when watching a volleyball match. The libero can often be thought of as an extension of the defensive specialist. Also, a coach can only designate one libero per set. For most teams, the libero is not a starter. At the beginning of matches before the first serve, the libero will normally replace a player in the starting lineup. That player becomes the only player that can replace the libero. There is normally one official tracking the libero substitutions during a match. Since those rules restrict hitting and setting at the position, the libero — based on size and the area that confines the position, as well — is often the best defensive player on the team and is used as a second defensive specialist. A coach is limited to 15 substitutions per set, per NCAA rules.
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From Wikipedia, the free encyclopedia. Look up libero in Wiktionary, the free dictionary. Libero is an Italian word meaning "free".
A libero is a defensive specialist position in indoor volleyball. The position was added to the game of indoor volleyball in along with a set of special rules for play in order to foster more digs and rallies and to make the game more exciting overall. The libero remains in the game at all times and is the only player who is not limited by the regular rules of rotation. The libero usually replaces the middle blocker position when that player rotates to the back row, but the libero never rotates to the front row. If the libero is injured, he can be replaced by any player who was not on the court at the time of the injury, but that player then must remain the libero for the remainder of the match.