Unit 4: Volleyball: Rules and regulations

I. Orientation — the governing framework of volleyball

Volleyball is a net game governed internationally by the Fédération Internationale de Volleyball (FIVB). In indoor volleyball, two teams of six players compete to ground the ball on the opponent’s court while preventing the opponent from doing the same. The rules establish the court, equipment, scoring system, player conduct, officiating duties, and coaching limits.

• Governing principle: A team may use a maximum of three team contacts to return the ball, excluding a block touch; the ball must cross the net within the antennas.
• Scoring convention: Rally-point scoring awards one point on every rally, whether the serving team or receiving team wins.
• Match structure: A match is normally best of five sets; the first four sets are played to 25 points and the deciding fifth set to 15, with a two-point advantage required.
• Rotation principle: When the receiving team wins the rally, it gains the serve and rotates one position clockwise.
• Regulatory basis: Dimensions, equipment, conduct, substitutions, time-outs, and officiating are applied according to the current FIVB rules and the regulations of the relevant competition.

II. Dimensions, layouts and marking of fields of volleyball — court design and equipment

The volleyball court is a rectangular playing area divided by a net into two equal team courts. Accurate measurement and visible markings are essential because the ball’s landing position, front- and back-row restrictions, and service location are judged against them.

A. dimensions, layouts and marking of fields of volleyball

The court layout defines the legal playing area, team positions, attack zones, service zones, and surrounding free space.

• Court dimensions: The court measures 18 metres long and 9 metres wide. The net divides it into two 9 m × 9 m courts.
• Free zone: A clear free zone surrounds the court on all sides. In standard indoor play it is at least 3 m wide, making the minimum total playing area 24 m × 15 m.
  • Playing space: The free playing space above the court must be at least 7 m high and free from obstructions.
• Boundary lines: All lines are 5 cm wide and must be clearly visible.
  • Sidelines: The two 18 m lines mark the lateral boundaries.
  • End lines: The two 9 m lines mark the back boundaries and are included within the court.
• Centre line: A line directly below the net divides the court. It extends from sideline to sideline; a player may cross into the opponent’s space only if part of the penetrating foot remains in contact with or above the centre line.
• Attack lines: On each side, a line 3 m behind the centre line separates the front zone from the back zone. The line belongs to the front zone.
• Service zone: The service zone is 9 m wide behind each end line. Two short lines, each 15 cm long, may mark its limits as extensions of the sidelines.
• Net and posts: The net is 1 m wide and 9.50–10 m long. Its height is 2.43 m for men and 2.24 m for women, measured at the centre; the two ends may not exceed the official height by more than 2 cm.
• Antennae: Flexible antennae rise 80 cm above the net and are attached to the outer edges of the sidelines. The ball must cross between them.
• Ball requirements: The ball is spherical, with a circumference of 65–67 cm and weight of 260–280 g. It must be uniform and made of suitable flexible material.

III. Rules and their interpretations of volleyball — playing the rally correctly

The rules regulate contacts, positions, scoring, substitutions, faults, and interruptions. Their interpretation depends on the ball’s status, the players’ positions at the service moment, and whether an action affects legal play.

A. rules and their interpretations of volleyball

A rally begins with a legal service and ends when the ball is grounded, goes out, or a fault is committed.

• Service: The server stands within the service zone and hits the ball with one hand or arm after releasing or tossing it. The ball must be struck within 8 seconds after the referee’s whistle.
  • Service order: Teams serve in the order recorded on the line-up sheet. A rotation or service-order fault gives the opponent a point and service.
• Team contacts: A team normally has up to three contacts to return the ball. A block touch does not count as one of these three contacts.
  • Double contact: One player may not hit the ball twice consecutively, except after a block or during the first team contact when the ball may touch successive body parts as part of one action.
  • Catch or throw: The ball may not be caught, held, or thrown; it must rebound from the contact.
• Four hits: A team commits a fault if it uses four contacts before returning the ball. A block touch followed by three team contacts is legal.
• Net crossing: The ball may touch the net while crossing, provided it passes through the crossing space between the antennae. A player touching the net between the antennae during the action of playing the ball commits a fault.
• Ball in or out: The ball is in if any part of it touches the boundary line or the floor inside the boundary. It is out if it lands completely outside the lines, touches an outside object, or crosses outside the antennae.
• Position faults: At the instant of service, front-row players must be closer to the centre line than their corresponding back-row players, and right-side players must be positioned to the right of their corresponding middle and left-side players.
• Attack restrictions: A back-row player may attack above net height only if take-off occurs behind the attack-line area. A player may not attack an opponent’s service from the front zone when the ball is entirely above the net.
• Block restrictions: Only front-row players may complete a block. Blocking an opponent’s service is illegal, and a block contact does not count as a team hit.
• Scoring and sets: A team wins a set by reaching 25 points with a two-point lead; at 24–24, play continues to 26–24, 27–25, and so forth. The fifth set uses the same principle at 15 points.
• Time-outs and substitutions: Each team is generally entitled to two time-outs and six substitutions per set, subject to competition regulations. A regular substitution replaces a player in the recorded rotation position; exceptional and libero replacements follow special provisions.
• Libero: The libero is a defensive specialist wearing a contrasting uniform. The libero may replace back-row players, cannot serve, block, or complete an attack above net height, and replacements do not count as regular substitutions.

IV. Qualification and number of officials in the volleyball — authority and responsibilities

Officials require technical knowledge, physical positioning, impartial judgment, and formal preparation. Qualification systems differ by national federation and competition level, but officials normally progress through education, examination, practical assessment, and supervised experience.

A. qualification and number of officials in the volleyball

A standard match uses a coordinated officiating crew whose members have distinct authority rather than interchangeable duties.

• First referee: The first referee is the principal decision-maker. This official controls the match from the beginning to the end, authorizes service, judges faults at the net and in play, administers sanctions, and may overrule other officials.
• Second referee: Positioned opposite the first referee, the second referee assists with rotations, net contacts on the relevant side, centre-line penetrations, substitutions, time-outs, bench conduct, and communication with the scorer.
• Scorer: The scorer records line-ups, starting players, points, time-outs, substitutions, sanctions, and the final result. The scorer also alerts the referees to serving-order or substitution irregularities.
• Assistant scorer: In competitions using an electronic or expanded scoring system, the assistant scorer records libero replacements and supports the scorer’s administrative work.
• Line judges: Two or four line judges indicate whether the ball is in or out, whether a touched ball goes out, whether the ball crosses outside the antennae, and whether the server commits a foot fault. Their signals assist the referees but do not replace referee authority.
• Refereeing commission and challenge officials: Major competitions may add a challenge referee, reserve referee, or jury members. Their presence depends on the event regulations and technology available.
• Qualification pathway: Officials usually complete a federation-approved course covering rules, mechanics, signals, scoring, and ethics; pass written or practical assessments; and maintain competence through appointments and continuing evaluation.
  • Core qualities: Good officials demonstrate impartiality, decisiveness, concentration, clear signalling, correct positioning, and consistent application of penalties.
• Number of officials: The basic international officiating team consists of one first referee, one second referee, one scorer, one assistant scorer where appointed, and two or four line judges. The exact crew may be expanded by competition regulations.

V. Coaching in the volleyball — planning performance and team conduct

Volleyball coaching combines technical instruction, tactical organization, physical preparation, psychological support, and match management. A coach must improve performance while ensuring that players and staff respect the rules and the authority of officials.

A. coaching in the volleyball

Effective coaching begins with a clear playing model: how the team serves, receives, attacks, blocks, defends, and transitions between phases.

• Technical development: Coaches teach serving, forearm passing, setting, spiking, blocking, and floor defence through progressive drills.
  • Example: A serve-receive drill can require three passers to direct ten serves toward a target setter zone, allowing accuracy to be measured rather than judged vaguely.
• Tactical organization: The coach selects a system such as 4–2, 5–1, or 6–2 according to player skills. The system must preserve legal rotation positions at service while creating effective attacking combinations.
• Serve and receive strategy: Coaches target weak passers, vary serve speed and direction, and organize reception lanes to reduce confusion. A float serve aimed between two receivers can create hesitation and a poor first contact.
• Attack planning: Attackers use tempo, direction, tips, and combinations to exploit blockers. The setter reads the quality of the pass and chooses a safe or aggressive option.
• Blocking and defence: Front-row players establish a block according to the opponent’s approach, while back-row defenders position themselves for line shots, cross-court attacks, tips, and deflections.
• Physical preparation: Training develops jumping power, speed, agility, shoulder endurance, flexibility, and recovery. Workload should progress gradually to reduce overuse injuries, especially at the shoulder, knee, and ankle.
• Psychological coaching: The coach develops concentration, communication, confidence, and emotional control. Short routines after errors—such as regrouping, identifying the next target, and resetting body language—help preserve performance.
• Match management: The coach studies opponents, prepares a starting line-up, requests time-outs, makes permitted substitutions, and gives tactical instructions during legal interruption periods.
  • Time-out use: A time-out may interrupt an opponent’s scoring run, clarify blocking assignments, or restore calm; it should communicate one or two precise actions rather than a confusing collection of instructions.
• Rules and ethics: Coaches must submit accurate line-ups, respect the scorer’s table and referees, keep bench personnel controlled, and avoid distracting opponents. Only the authorized team captain may address the referees on behalf of the team, except when the coach communicates through permitted procedures.
• Performance analysis: Match statistics such as reception quality, attack efficiency, service errors, blocks, and opponent scoring runs convert observation into evidence for later training.
• Player welfare: Coaching includes warm-up, hydration, injury reporting, safe landing mechanics, fair selection practices, and respect for every player. Winning does not justify unsafe training or abusive conduct.