How do the 5 substitutions in 3 windows work in football?

Teams may make up to 5 substitutions per match, but to prevent repetitive time-wasting during the flow of play, each team is limited to a maximum of 3 in-game stoppage windows. Substitutions executed during the halftime interval do not count as one of the 3 in-play windows.

Does a substitution during extra time provide additional windows?

Yes, in competitions that permit an extra time period (30 minutes), teams are granted one additional substitution (making 6 total) and one additional substitution window. Substitutions made before extra time begins or during the extra time half-time interval do not consume a window.

How does the IFAB Permanent Concussion Substitute protocol work?

Under IFAB Protocol B, if a player suffers an actual or suspected head injury, the team may use an additional permanent concussion substitute without using standard substitution quotas or windows. To ensure sporting fairness, the opposing team is automatically granted an additional standard substitute and window.

5 Substitutions & Concussion Protocol Rules Guide

Interactive Tactical Substitution Manager

Simulate player substitutions to test window consumption, halftime preservation, and medical concussion regulations.

Subs Remaining 5 / 5

In-Play Windows 3 / 3

Extra Time Active? No (90 Min)

Match Timing / Opportunity

Players Swapped in this Stoppage

Substitution History

No substitutions logged yet. Start match management above.

Comprehensive Guide to Modern Football Substitution Regulations

The evolution of substitution laws has transformed football tactics, squad construction, and sports science. In the pre-1958 era, injured players simply left the field with no replacement. Today, elite European leagues (Premier League, La Liga, Serie A, Bundesliga, Ligue 1) and UEFA club competitions (Champions League) operate under an intricate matrix of stoppage windows, medical exemptions, and bench quotas.

1. The 5-Sub / 3-Window Framework

Each team is permitted up to 5 substitutions in regular time (90 minutes + stoppage time). However, to protect match rhythm and viewer entertainment, substitutions can only be executed across a maximum of 3 in-play stoppages. Unused windows and substitutes can be carried forward, but once 3 in-play windows are exhausted, no further tactical substitutions can be made even if unused substitute slots remain.

2. Extra Time Regulations (Knockout Ties)

When a knockout fixture reaches extra time (two 15-minute halves), teams are awarded one additional substitute (6th sub) and one additional in-play window (4th window). Crucially, substitutions executed during the short break before extra time or at extra-time half-time do not consume any window.

3. Permanent Concussion Protocol (IFAB Protocol B)

Head trauma requires immediate clinical evaluation. Under IFAB Protocol B, if an independent or club doctor diagnoses suspected concussion, the player can be permanently replaced without deducting from regular substitute quotas or stoppage windows. To maintain sporting equity, the opposition team receives one extra substitution authorization.

4. Bench Size Quotas (Up to 15 Substitutes)

In UEFA European competitions and FIFA tournaments, team matchday sheets allow up to 12 to 15 substitutes on the bench (23-man to 26-man total matchday squad). This expansive bench allows managers to carry specialist goalkeepers, youth prospects, and position-specific tactical replacements.

Tactical Exploitation: Window Economics

Elite managers like Pep Guardiola and Carlo Ancelotti treat substitution windows as an economic currency. Committing two substitutions at the 60th minute in a single stoppage uses only 1 window while refreshing two crucial positions. Conversely, introducing players individually at minutes 60, 72, and 82 exhausts all 3 windows—leaving the team completely helpless if a goalkeeper or defender suffers a muscle strain in the 88th minute.

Frequently Asked Questions

What happens if a goalkeeper gets injured after all 3 windows are used?

If all 3 in-play windows (or all 5 substitutions) have been exhausted and no concussion is diagnosed, an outfield player must put on goalkeeper jerseys and gloves to take their place in goal.

Does a substitution made during VAR review count as a window?

Yes. If play is stopped for an on-field VAR check or review and the referee permits substitutions, that stoppage counts as 1 in-play window for any team making a change.

Are yellow cards wiped out before penalty shootouts?

Yellow cards received during normal and extra time are not carried into penalty shootouts. A player receiving a yellow during the shootout who was already booked earlier will not be sent off, preventing instant disqualifications during decisive kicks.

5 Substitutions & 3-Window Protocol