What is the libero?
The volleyball libero is a defensive specialist position in indoor volleyball. The position was added to the game in 1999 along with special rules for play in order to foster more digs and rallies and to make the game more exciting. The libero remains in the game at all times and is the only player not limited by rules of rotation. He usually replaces the middle blocker position when they rotate to the back row and never rotates to the front row himself.