Court: The net is hung 36" on ends and should be 34" at the middle. When laying out courts, allow enough room at the ends and sides for player movement.
Serve:Player must keep one foot behind the back line when serving. The serve is made underhand. The server must contact the ball in the air; it cannot be hit after a bounce. The service is made diagonally cross court and should land between the non-volley zone and the baseline. Only one serve attempt is allowed, except if the ball touches the net on the serve and lands in the proper service court. Then the serve may be taken over. At the start of each game, the first serving team is allowed only one fault before giving up the serve to the opponents. Thereafter, both members of each team will serve than default before the ball is turned over to the opposing team (in doubles). Server Position: At the beginning of the serve, both feet must be behind the baseline. At the time the ball is struck, at least one foot must be on the playing surface or ground behind the baseline and the server's feet may not touch the playing surface in an area outside the confines of the serving area. The serving area is defined as the area behind the baseline and on or between the imaginary lines extended from the court centerline and each sideline. (revised April 1, 2011) Service Foot Fault: During the serve, when the ball is struck, the server’s feet shall not: A. Touch the area outside the imaginary extension of the sideline. B. Touch the area outside the imaginary extension of the centerline. C. Touch the court, including the baseline. 1. A point is scored by the serving team when the receiving team (or player) makes a fault. 2. When the serving team makes its first fault, players will stay on the same courts and turn the ball over to the other team. Players switch courts only after scoring. Singles Play: All rules apply with one exception; when serving in singles, each player serves from the right hand court when the score is 0 or an even number and from the left hand court when the score is odd numbered. Determining the Serving Team or Player: Use a coin toss or rally the ball until a fault is made. The winner has the option of serving first or receiving.
Volley:All volleying (hitting the ball before it bounces) must be done with player's feet behind the non-volley zone line. It is a fault if the player steps over the line on the volley follow through.
Double Bounce Rule:Each team must play their first shot off the bounce. That is, the receiving team must let the serve bounce and the serving team must let the return of serve bounce before playing it.
Fault:It is a fault when: A. Hitting a ball out of bounds. A ball landing on the line is good. B. The ball does not clear the net. C. Stepping into the non-volley zone and volleying the ball. D. Volleying the ball before it has bounced once on each side of the net.
Scoring:A team may score a point only when serving. A player who is serving shall continue to do so until a fault is made by his/her team. The game is played to 11 points. A team must win by 2 points.
http://www.usapa.org/for the latest revision of the International Federation of Pickleball Official Tournament Rulebook.