Playing in Europe the summer after my junior year at Minnesota was the first time I understood that “knowing the rules” and “knowing the FIVB rules” are two different things. Back home, refs had some flex on ball-handling. First-contact shanks that kept rallies alive usually got waved off. In our first match in Ankara, I set a ball with a little too much carry on a fast-paced reception, and the whistle blew immediately. My teammates looked at me like I’d made a rookie mistake. Actually, in a way, I had.
The full picture of volleyball rules runs deeper than most players realize until they play under a different federation’s standards. The FIVB Official Volleyball Rules 2025-2028, approved at the 39th FIVB World Congress in 2024, introduced specific, verifiable changes that affect everything from how challenges get used to how setting and ball-handling get judged.
If you’ve been watching VNL 2025 or following VNL 2026 and wondering why things look different from what you remember, this is where it starts.
What changed in 2025-2028 vs. the previous cycle
| Rule area | Previous (2021-2024) | Current (2025-2028) | Match impact |
|---|---|---|---|
| Video Challenge | Mid-rally challenges permitted | Post-rally only; bookmark system introduced for 2026 testing | Eliminates mid-play stoppages |
| Ball Crossing (Rule 10.1.2) | Ball had to pass through the crossing space between the antennas | Ball sent into opponent’s free zone via external space on 2nd/3rd hit is out once it crosses the net plane | Cleaner boundary rule for sharp cross-angle attacks |
| Serving Team Positions (Rule 7.4) | Players locked into rotational positions until ball contact | Trial only at VNL 2025 and the 2025 world championships: serving team may occupy any position at service contact (no overlap), receiving team rotation judged at the whistle. Under review, not yet permanent | Tested for longer rallies; not adopted league-wide |
| Double Contact (Setting) — Trial | Any two contacts during a set = fault | Double contact allowed if ball stays same-side court; faults only on separate touches or ball crossing over | Tested at VNL 2025, under review for wider adoption |
| Screening (Rule 12.5) | Vague guidelines on player positioning during serve | Players must not use coordinated body movements to screen the serve | Removes the “natural movement” gamesmanship argument |
| Libero serving | Not permitted in FIVB play | Still not permitted in FIVB play | Libero serving exists only in USAV, NCAA, and NFHS — not FIVB |
| Service clock | 8 seconds (Rule 12.4.4) | 8 seconds (unchanged) | No change |
| Roster size (2026) | 12 players per match | Age-group world championships expand to 14 players from the U17 World Championship 2026 | More roster depth at age-group level |
The challenge system shift is the change most visible to fans. Under 2021-2024 rules, teams could stop a rally in progress to request video review. You’d see a coach call it while a ball was still in play. The 39th FIVB World Congress closed that window. Challenges now happen only after the rally concludes, and teams can review any action from that completed rally, including the serve.
Bookmark System
For VNL 2026, the FIVB approved an evolution called the bookmark system: a team marks an action mid-rally that they may want to challenge if they lose the point. The review only proceeds if they lose the rally.
Now, if both teams bookmark actions in the same rally, the sequence is reviewed chronologically and the first fault observed, wins. And if there is, no bookmark, it’s no challenge. This is currently under trial within the FIVB Strategic Vision 2032 framework.
The rules that matter most, by gameplay phase
Serving
The service clock is 8 seconds, measured from the moment the first referee whistles for service (Rule 12.4.4). That number has not changed between cycles, and it is the same clock USAV and the NCAA use. The 15-second figure you may have seen quoted is a US pro-league pace clock that runs between rallies, not the FIVB serve clock.
What the FIVB is testing under Rule 7.4 is what players can do before the serve. A trial run at VNL 2025 and the senior and age-group world championships lets the serving team occupy any position at service contact, with no overlap fault, while the receiving team still has to hold rotational order. Under the test, the referee’s whistle defines the rotation and the toss of the serve marks the moment a receiving player may move. The FIVB is reviewing the data before deciding on wider adoption. This is a trial, not a permanent 2025-2028 rule, so don’t expect it called at your club tournament yet.
Screening (Rule 12.5) got tighter language. Players cannot use coordinated jumps, arm movements, or grouped positioning to block the receiver’s view of the serve. The 2021-2024 language was vague enough that teams occasionally used “natural” pre-serve movement to argue ambiguity. The 2025-2028 version removes that argument. The receiving team is entitled to a clear sightline to the serve.
Receiving and ball handling
This is the area that produces the most referee inconsistency complaints at every level, and the 2025-2028 rulebook takes a deliberate stance on it.
The FIVB guidelines give referees explicit judgment latitude on first-contact ball handling. The language around “catches” and “throws” specifically exempts hard defensive contacts where the ball compresses but rebounds cleanly. That latitude is intentional. The rules are built around promoting flowing play, not stopping every reception that looks imperfect. When a ref doesn’t call a lift on a sprawling dig, that is the rulebook working as written.
What tightened: attack-phase ball handling. Rule 9.2.2 is applied strictly for attack contacts. The ball cannot be caught or thrown. The 2025 refereeing guidelines specifically call out attack-phase tipping: if a tip ball doesn’t instantly rebound from the fingers, if the hand accompanies the ball or changes the ball’s direction more than once, that’s a fault, and referees are instructed to call it. The “soft tip gray zone” that some attackers exploit gets cleaner enforcement here. If you want to understand what a legal lift call actually looks like versus a hard dig, that distinction matters on every back-court contact.
The double-contact trial tested at VNL 2025 is worth tracking. Under the trial, a double contact during the setting action is not automatically a fault if the ball stays on the same side of the court. Faults are only called for two clearly separate touches or for any double contact on a ball played over the net. Catches, lifts, and carries remain faults regardless. This has not been written into the permanent 2025-2028 rules. The FIVB is reviewing VNL 2025 data before deciding on wider adoption for 2026 and beyond.
Ball crossing the net (Rule 10.1.2)
The external space clarification fixed a rule that had become inconsistently applied at every level. Under the updated language: a ball sent into the opponent’s free zone totally or partly through the external space (outside the antennas), when coming from the team’s second or third hit, cannot be played back. It’s judged as out the moment it crosses the net plane.
The previous version created arguments about whether a ball that skimmed outside an antenna before re-entering the playing space was in or out. The standard is now unambiguous: second or third hit outside the antennas means out when it crosses. The net’s boundary specifications define exactly where that plane sits.
Setting
The standard ball-handling criteria for setting are unchanged: the ball must not visibly come to rest in the hands, and contact must be simultaneous if two hands are used. The double-contact trial described above is the only active change being tested for setting contacts.
The libero’s setting restriction is unchanged and still catches teams off guard regularly. A libero acting as setter who uses an overhand finger action while in front of the attack line, and whose set is then attacked above the net height by a teammate, commits a fault. Bump-setting from the front zone is legal. Most players learn this distinction the hard way.
Attacking and blocking
Back-row attack rules are unchanged: a back-row player can attack from behind the 3-meter line, jumping from behind it and landing anywhere. Front-row players have no attack-line restriction. Blocking contact rules are similarly stable. The change in 2025-2028 is that block touches are now specifically included in the video challenge regulations. A clear and visible contact must appear on video to overturn the original decision; if footage is inconclusive, the original call stands.
Scoring
Rally point scoring is unchanged. Every rally produces a point. Sets go to 25 (deciding set to 15), with a 2-point margin required. How volleyball scoring works is a separate topic. This article covers only what changed in the 2025-2028 FIVB rules cycle.
FIVB vs. NCAA vs. USAV: where the rules diverge
Substitutions
FIVB allows 6 substitutions per set. Each player can only enter in their original rotation position and can only be substituted once per set.
USAV allows 15 substitutions per set, with unlimited individual re-entries by a substitute within that limit. A player can go in and out multiple times across a set.
NCAA Division I allows 15 substitutions per set, the same number as USAV. NFHS high school runs 18 per set. The strict 6-sub structure is unique to FIVB international play, which is why moving between US domestic ball and international competition is the one direction where the substitution math actually changes.
Libero serving
FIVB: The libero may not serve. In international play, serving is one of the actions the libero is barred from, alongside attacking a ball above net height and blocking.
USAV, NCAA, and NFHS: These US codes modified the rule to let the libero serve in one rotation position per set, recorded on the lineup sheet. The NCAA introduced it in 2004, and USAV and high school play followed.
This is the rule most people get backwards. The libero-serve allowance is a US domestic modification, not an FIVB rule, so a teammate who says the libero can’t serve is right about international play and wrong about your club or college match. Always check which code governs your competition. The libero’s back-row replacement rules are a separate matter and are unchanged: unlimited replacements per set, no substitution count, entry and exit between the attack line and end line only.
Coach interaction
FIVB: Only the head coach can request game interruptions (timeouts, substitutions) or address officials. An assistant cannot call a timeout or speak to the second referee during play.
USAV: An assistant coach may stand to instruct players within the same location restrictions as the head coach.
NCAA: Only one coach at a time may address officials to clarify a non-judgment call. Coaches may not delay resumption to discuss a judgment decision.
Roster size
FIVB standard: 12 players per match. For age-group world championships, rosters expand to 14 players starting with the U17 World Championship 2026.
USAV: 12 players. Club tournament regulations sometimes vary.
NCAA: Rosters are not submitted before the match. Designated coaches are listed on the first-set lineup sheet.
Why refs call things differently, and why that’s actually correct
The most common complaint on volleyball forums, and in my own gym, is that refs at different levels call ball handling inconsistently. Same lift situation, different call depending on the tournament.
That inconsistency isn’t lack of knowledge or mistake. It’s something built into the design.
The FIVB rulebook gives referees explicit judgment latitude on ball-handling violations. The guidelines distinguish between reception contacts (where imperfect contact is expected and tolerated if the ball rebounds cleanly) and setting and attack contacts (where stricter standards apply). When that latitude travels down to recreational and scholastic levels, referees interpret it differently based on their training, the level of play, and what they’ve been instructed to prioritize at that specific competition.
The 2025 FIVB Refereeing Guidelines state the objective plainly: promote flowing play. A rally that continues is better for the sport than a stoppage for a marginal lift call. That’s not the ref losing control. That’s the ref executing the philosophy behind the rules.
Where it gets genuinely inconsistent: when refs apply attack-contact standards to reception contacts, or vice versa. The ball that comes off a pancake dig with some double-contact is in a completely different rule space than the same ball getting set with two hands and a clear carry. Same visual result, different standard. Understanding that distinction tells you when to politely ask for clarification after a call and when to drop it.
Not under FIVB rules. In international play the libero is not allowed to serve. The US codes are the exception: NCAA, USAV, and NFHS let the libero serve in one designated rotation position per set. So the answer depends entirely on which rulebook governs your match.
The ball may touch any part of the body. It must rebound clearly, not be caught, thrown, or accompanied by the hand. For first-contact reception, referees have judgment latitude. For attack contacts, Rule 9.2.2 is applied strictly with no tolerance for carries or redirected tips.
Standard FIVB: each team gets two challenges per set. If a challenge is successful, the team retains it. Challenges can only be requested after the rally concludes. The 2026 bookmark trial adds the ability to mark potential challenge moments during a rally before requesting the review at rally’s end.
8 seconds from the first referee’s whistle for service (FIVB Rule 12.4.4). The server must contact the ball within that window, or it’s a service fault. NCAA and USAV use the same 8 seconds; NFHS high school uses 5. No major indoor code uses a 15-second serve clock — that figure belongs to the between-rallies pace clock some US pro leagues run.
On a team’s second or third hit, if the ball passes outside the antennas into the opponent’s free zone, it’s judged as out the moment it crosses the net plane. It cannot be played. This closed a gap that had produced inconsistent calls on sharp cross-angle attacks grazing outside the antenna line.
Rule 12.5 requires that the serving team’s players not use coordinated movements, including jumps, arm raises, and group clustering, to obstruct the receiving team’s view of the serve. The 2021-2024 version left enough room that teams could argue intent. The 2025-2028 language removes that argument.
No. Libero replacements happen in a designated zone between the attack line and end line, they’re unlimited per set, and they don’t count against the team’s substitution limit. This is consistent across FIVB, USAV, NCAA, and NFHS.
FIVB: 6 subs per set, each player replaced once and returning only to the original position. NCAA Division I and USAV: 15 subs per set, with unlimited individual re-entries within that limit. NFHS high school: 18 subs per set.
Where to find the official rulebook
The FIVB publishes the complete Official Volleyball Rules 2025-2028 at fivb.com, available in English, Spanish, French, and Arabic. The companion Casebook 2025 provides case-by-case application examples and is the document coaches and officials should use when working through edge situations the main rules text doesn’t resolve.
For domestic competition, USAV publishes its own rulebook at usavolleyball.org. It modifies FIVB rules in specific areas and is the controlling document for USA Volleyball sanctioned events. NCAA rule changes are updated every two years through the NCAA Playing Rules Oversight Panel.
The gap in substitution rules remains the most significant divergence for anyone moving between domestic club play and international competition.
Understanding how international volleyball rules have evolved across cycles helps explain why certain rules exist at all. Rally scoring, the libero position, the challenge system: each was a deliberate answer to a problem the sport had at a specific moment in its history.
If you’re verifying your court setup before a match, FIVB court specifications cover every measurement the rulebook mandates, from playing area to free zone to antenna placement. Those specs are unchanged in the 2025-2028 cycle.
Keep playing, Ryan Walker
The refs at our FIVB-level matches call ball-handling way tighter than what I’m used to in USAV. Same contact, different whistle. Is that on purpose?
Because it is stricter, by design. The FIVB ball-handling standard is tighter than the recreational tolerance you’ll often see in USAV play, especially on the first contact. I learned this the hard way in Ankara: a set with a little carry that would’ve been waved off back home got whistled instantly. Neither ref is wrong, they’re enforcing different standards. If you’re playing or coaching toward FIVB-level officiating, clean up your hands on the first ball and your setting carry now. The section above on why refs call things differently covers exactly this.
I coach a club team and want to stay current. What changed in the FIVB 2025–2028 rules that I should be drilling differently this season?
The 2025-2028 book was approved at the 39th FIVB World Congress in 2024, and the changes that matter most for a coach cluster around how the video challenge system gets used and the libero’s positioning, including the serving spot. The article breaks the changes down by phase of play above, which is the fastest way to see what touches your drills. I’d point you there rather than have me list rule numbers from memory, since the by-phase section is built to be the teachable version. Read that, then adjust your serve-receive and challenge habits first, because those are where club teams feel it.
Of the 2025-2028 FIVB changes, which ones would a regular club player actually notice on the court?
Hey Daniel, most of the 2025-2028 changes are refinements rather than dramatic overhauls, but a few are worth knowing. The ball-handling and setting judgment got standardized around an ‘athletic action’ idea, so refs apply the lift and double-contact calls more consistently than the old by-feel approach. There were also tweaks to how video challenges are used and clarifications around the libero. For a club player, the one you’ll actually feel is the tighter, more consistent ball-handling standard, especially on setting. I broke each change down by gameplay phase in the article so you can see which ones touch your role specifically.