Why does one of the vball players have different color jersey?

Question

I was watching Stanford v. UCLA and noticed that on each team (women), one of the players has a different colored jersey.

Answer 1

No, the person with a different color jersey isn't a server. They are playing a position called libero. The libero is a player specialized in defensive skills: he or she must wear a contrasting jersey color from his or her teammates and cannot block or attack the ball when it is entirely above net height. When the ball is not in play, the libero can replace any back-row player, without prior notice to the officials. His or her replacements also do not count against the substitution limit each team is allowed per set, although the libero may be replaced only by the player whom s/he replaced. The libero may function as a setter only under certain restrictions. If s/he makes an overhand set, s/he must be standing behind (and not stepping on) the 3-meter line; otherwise, the ball cannot be attacked above the net in front of the 3-meter line. An underhand pass is allowed from any part of the court. Furthermore, a libero is not allowed to serve, according to international rules, with the exception of the NCAA women's volleyball games, where a 2004 rule change allows the libero to serve, but only in a specific rotation.

Answer 2

that is the libero, a defensive specialist.  they can sub in and out an unlimited number of times, they have to stay in the back row, and have certain other limitations on what they can and cannot do

Answer 3

Server?  Plays only one position?