Scope of this comparison

This compares two indoor rules formats for the overlapping 2026–2027 period, not tournament qualification or bracket regulations. It excludes beach volleyball, youth adaptations and event-specific experiments. The FIVB column describes the published baseline, not a guarantee that every event uses it unchanged. NCAA division differences appear within the NCAA column.

The governing texts are the FIVB 2025–2028 rulebook and NCAA 2026–2027 rulebook.

What changes in practice

Coaching implication: NCAA permits more repeated specialist swaps; FIVB requires tighter planning of substitution pairs. Track regular substitutions separately from libero movements. The rows summarize ordinary play; exceptional substitutions require separate checks.

For more detail, see FIVB substitution and rotation and set and match format.

Governing rulebooks

Rules side by side

Rules side by side
Situation Fédération Internationale de Volleyball (FIVB) · Official Volleyball Rules 2025–2028 · FIVB indoor volleyball baseline, compared for the overlapping 2026–2027 period; excludes event-specific modifications and experimental rules.National Collegiate Athletic Association (NCAA) · 2026 and 2027 NCAA Women’s Volleyball Rules and Interpretations · NCAA women’s indoor volleyball, Divisions I, II and III, with division-specific substitution limits identified.
Standard match and set scoring — similarityFirst to three sets; sets 1–4 target 25 points, the fifth 15. Every set requires a two-point lead.First to three sets; sets 1–4 target 25 points, the fifth 15. Every set requires a two-point lead.
Regular substitutions — each setSix per team.15 per team in Division I; 18 in Divisions II and III.
Player re-entry — within a setA starter may leave once and return once to the original lineup position. Their substitute may enter once and be replaced only by that starter.Repeated entries are allowed within the team limit. Multiple players may share a service-order position; returning players retain their original service-order position, subject to the injury exception.
Libero service — each setThe libero cannot serve.Either libero may serve, but only in the same single rotation when two liberos are designated.
Libero replacements — substitution accountingUnlimited replacements do not consume regular substitutions; replacement procedures still apply.Unlimited libero replacements and exchanges do not consume team substitutions; replacement procedures still apply.

Rule editions and sources