Volleyball · Official Volleyball Rules
Law 15: Interruptions
4 parts · 5 tests · 50 facts · updated 25 October 2026 · markdown
Time-outs and substitutions: how many, in what order and who may request them, the limits on substitutions, exceptional and illegal substitutions, the substitution procedure, and improper requests.
15.151Time-outs and Requests
The regular interruptions, their number and order, who may request them, and how time-outs work.
Test 1Time-outs and the order of requestsTake a test
The only regular interruptions are time-outs and substitutions.
Source: FIVB OVR 2025-2028, Rule 15 · recall
Each team may request at most two time-outs and six substitutions in a set.
Source: FIVB OVR 2025-2028, Rule 15.1 · recall
All requested time-outs last 30 seconds; at top events the FIVB may approve another length.
Source: FIVB OVR 2025-2028, Rule 15.4.1 · recall
In every time-out the players in play go to the free zone near their bench.
Source: FIVB OVR 2025-2028, Rule 15.4.2 · recall
Only the coach may request them, or in the coach's absence the assistant coach or the game captain.
Source: FIVB OVR 2025-2028, Rule 15.3.1 · recall
A time-out is asked for with the hand signal while the ball is out of play and before the whistle for service.
Source: FIVB OVR 2025-2028, Rule 15.4.1 · recall
At the top level the buzzer and then the hand signal are obligatory.
Source: FIVB OVR 2025-2028, Rule 15.4.1 · recall
Both time-outs are gone and four of the six substitutions are used, leaving two substitutions.
Source: FIVB OVR 2025-2028, Rule 15.1 · applied
One or two time-outs and one substitution request may follow one another in the same interruption.
Source: FIVB OVR 2025-2028, Rule 15.2.1; Casebook 2024 4.28 · applied
A third time-out is improper, but once it has actually delayed the game it is curtailed and sanctioned as a delay.
Source: FIVB OVR 2025-2028, Rule 15.11.1.4; Casebook 2024 4.29 · applied
15.152Substitution Limits
What a substitution is, how often starters and substitutes may change, and the limits in match situations.
Test 1Who may come on, and how oftenTake a test
A player other than the Libero or his replacement player enters, after being recorded, to take another player's position.
Source: FIVB OVR 2025-2028, Rule 15.5.1 · recall
A starter may leave once and re-enter once per set, only to his previous position in the line-up.
Source: FIVB OVR 2025-2028, Rule 15.6.1 · recall
A substitute can only be substituted by the starting player he replaced.
Source: FIVB OVR 2025-2028, Rule 15.6.2 · recall
A substitute may enter in place of a starter only once per set.
Source: FIVB OVR 2025-2028, Rule 15.6.2 · recall
Two or more players may be substituted at the same time within the same request.
Source: FIVB OVR 2025-2028, Rule 15.2.2 · recall
Separate substitution requests by the same team need a completed rally in between, injury and expulsion cases apart.
Source: FIVB OVR 2025-2028, Rule 15.2.3 · recall
A substitution before the start of a set is allowed and is recorded as a regular one in that set.
Source: FIVB OVR 2025-2028, Rule 15.3.2; Casebook 2024 4.12 · applied
No. 12 came on for No. 5, so only No. 5 may replace him, returning to his own position.
Source: FIVB OVR 2025-2028, Rule 15.6 · applied
A starter may leave once and come back once, after which no further substitution involving him is possible.
Source: FIVB OVR 2025-2028, Rule 15.6.1 · recall
Two substitution requests by the same team must be separated by a completed rally.
Source: FIVB OVR 2025-2028, Rule 15.2.3 · recall
Test 2Substitution limits in match situationsTake a test
Only one substitution remains, so the coach picks one and the other is rejected as an improper request.
Source: FIVB OVR 2025-2028, Rule 15.1, 15.11; Casebook 2024 4.14 · applied
The legal substitution is granted, and the illegal one is rejected with a delay sanction.
Source: FIVB OVR 2025-2028, Rule 15.10.4; Casebook 2024 4.15 · applied
Leaving once and returning once uses up the starter's substitutions for the set.
Source: FIVB OVR 2025-2028, Rule 15.6.1 · applied
The pairing is fixed: a substitute can only be replaced by the starter he came on for.
Source: FIVB OVR 2025-2028, Rule 15.6.2, 15.9.1 · applied
Two time-outs may be taken in one interruption, but two substitution requests may not.
Source: FIVB OVR 2025-2028, Rule 15.11.1.3; Casebook 2024 4.28 · applied
After a rejected request sanctioned by a delay warning, no regular interruption may be requested in the same interruption.
Source: FIVB OVR 2025-2028, Rule 15.2.4; Casebook 2024 4.30.1 · applied
The request starts when a substitute enters the zone, so only that player's substitution is part of it.
Source: FIVB OVR 2025-2028, Rule 15.10.3.1; Casebook 2024 4.2 · applied
A second substitution in the same interruption is improper even after a time-out; the others are legal.
Source: FIVB OVR 2025-2028, Rule 15.2, 15.7, 15.11.1.3; Casebook 2024 4.9, 4.28 · applied
Without delay, the extra request is simply rejected as improper and written on the score sheet.
Source: FIVB OVR 2025-2028, Rule 15.11; Casebook 2024 4.14 · applied
With six per set, they have four, two and none left.
Source: FIVB OVR 2025-2028, Rule 15.1 · applied
15.153Exceptional and Illegal Substitutions
Substituting an injured or expelled player beyond the limits, an incomplete team, and correcting an illegal substitution.
Test 1Exceptional and illegal substitutionsTake a test
An exceptional substitution is allowed when a player cannot go on through injury, illness, expulsion or disqualification and no legal one is possible.
Source: FIVB OVR 2025-2028, Rule 15.7 · recall
Any player not on court at that moment may enter, except the Libero, the second Libero and their regular replacement player.
Source: FIVB OVR 2025-2028, Rule 15.7 · recall
The player replaced exceptionally may not re-enter the match.
Source: FIVB OVR 2025-2028, Rule 15.7 · recall
It is never counted as a regular substitution but is recorded as part of the total for the set and match.
Source: FIVB OVR 2025-2028, Rule 15.7 · recall
Legal substitution first, then exceptional; if neither is possible the team is incomplete.
Source: FIVB OVR 2025-2028, Rule 15.8 · recall
A substitution is illegal if it exceeds the limits of Rule 15.6, outside the exceptional case, or involves an unregistered player.
Source: FIVB OVR 2025-2028, Rule 15.9.1 · recall
He may substitute exceptionally, and the expelled player cannot return, or accept that the team is incomplete for that set.
Source: FIVB OVR 2025-2028, Rule 15.8; Casebook 2024 4.11 · applied
Team A's points since the fault are cancelled, team B keeps its 16 and gains a point and the service.
Source: FIVB OVR 2025-2028, Rule 15.9.2 · applied
Rule 15.9.2 sets the order: the penalty, the correction, then the cancellation of points.
Source: FIVB OVR 2025-2028, Rule 15.9.2 · recall
Only when a legal substitution is impossible may the team substitute exceptionally, and only then is it incomplete.
Source: FIVB OVR 2025-2028, Rule 15.8 · recall
15.154Procedure and Improper Requests
The substitution zone, when a request starts, who authorises it, and how improper requests are treated.
Test 1Substitution procedure and improper requestsTake a test
Substitutions take place within the substitution zone.
Source: FIVB OVR 2025-2028, Rule 15.10.1 · recall
Entering the substitution zone ready to play, during an interruption, is the request itself.
Source: FIVB OVR 2025-2028, Rule 15.10.3.1 · recall
Otherwise no hand signal is needed: entering the zone is the request.
Source: FIVB OVR 2025-2028, Rule 15.10.3.1 · recall
If the player is not ready at the moment of the request, it is not granted and the team is sanctioned for delay.
Source: FIVB OVR 2025-2028, Rule 15.10.3.2 · applied
Requests during a rally or at or after the whistle to serve are improper.
Source: FIVB OVR 2025-2028, Rule 15.11.1.1 · recall
The first such request is rejected and noted on the score sheet without other consequences; later ones are delays.
Source: FIVB OVR 2025-2028, Rule 15.11.2, 15.11.3 · recall
C is the substitution zone between the attack-line extensions by the scorer's table; A is a warm-up area, B the Libero Replacement zone, D behind the end line.
Source: FIVB OVR 2025-2028, Rule 1.4.3, 15.10.1 · applied
Entering the zone makes the request, which is acknowledged, authorised and then carried out and recorded.
Source: FIVB OVR 2025-2028, Rule 15.10 · recall
All substitutes must enter together to be in the same request, and the changes are made one pair after another.
Source: FIVB OVR 2025-2028, Rule 15.10.4 · recall
Sources
FIVB Official Volleyball Rules 2025-2028, Rule 15 (paraphrased in original wording; original questions authored from the Rules, not reproduced)
- FIVB OVR 2025-2028, Rule 15.74
- FIVB OVR 2025-2028, Rule 15.13
- FIVB OVR 2025-2028, Rule 15.4.13
- FIVB OVR 2025-2028, Rule 15.6.13
- FIVB OVR 2025-2028, Rule 15.6.22
- FIVB OVR 2025-2028, Rule 15.2.32
- FIVB OVR 2025-2028, Rule 15.82
- FIVB OVR 2025-2028, Rule 15.9.22
- FIVB OVR 2025-2028, Rule 15.10.3.12
- FIVB OVR 2025-2028, Rule 151
- FIVB OVR 2025-2028, Rule 15.4.21
- FIVB OVR 2025-2028, Rule 15.3.11
- FIVB OVR 2025-2028, Rule 15.2.1; Casebook 2024 4.281
- FIVB OVR 2025-2028, Rule 15.11.1.4; Casebook 2024 4.291
- FIVB OVR 2025-2028, Rule 15.5.11
- FIVB OVR 2025-2028, Rule 15.2.21
- FIVB OVR 2025-2028, Rule 15.3.2; Casebook 2024 4.121
- FIVB OVR 2025-2028, Rule 15.61
- FIVB OVR 2025-2028, Rule 15.1, 15.11; Casebook 2024 4.141
- FIVB OVR 2025-2028, Rule 15.10.4; Casebook 2024 4.151
- FIVB OVR 2025-2028, Rule 15.6.2, 15.9.11
- FIVB OVR 2025-2028, Rule 15.11.1.3; Casebook 2024 4.281
- FIVB OVR 2025-2028, Rule 15.2.4; Casebook 2024 4.30.11
- FIVB OVR 2025-2028, Rule 15.10.3.1; Casebook 2024 4.21
- FIVB OVR 2025-2028, Rule 15.2, 15.7, 15.11.1.3; Casebook 2024 4.9, 4.281
- FIVB OVR 2025-2028, Rule 15.11; Casebook 2024 4.141
- FIVB OVR 2025-2028, Rule 15.9.11
- FIVB OVR 2025-2028, Rule 15.8; Casebook 2024 4.111
- FIVB OVR 2025-2028, Rule 15.10.11
- FIVB OVR 2025-2028, Rule 15.10.3.21
- FIVB OVR 2025-2028, Rule 15.10.3.31
- FIVB OVR 2025-2028, Rule 15.11.1.11
- FIVB OVR 2025-2028, Rule 15.11.2, 15.11.31
- FIVB OVR 2025-2028, Rule 1.4.3, 15.10.11
- FIVB OVR 2025-2028, Rule 15.101
- FIVB OVR 2025-2028, Rule 15.10.41