48-Team World Cup Forces 23-Man Squad Builders to Rethink Depth for Seven Matches

The 2026 FIFA World Cup will be the first edition with 48 teams, expanding the tournament from 64 to 104 matches. For the first time, a finalist could play seven games—one more than in any previous World Cup—because of a new round of 32 that adds an extra knockout layer. Yet the squad limit remains 23 players, a number unchanged since 1998. That arithmetic—23 players for a potential seven matches, with rest days shrinking as the tournament progresses—forces managers to rethink every aspect of squad construction. The old assumptions about specialist starters and utility substitutes no longer hold. This is a structural problem, not a tactical preference.

Seven-Match Haul Strains 23-Player Limit

Under the 32-team format, a finalist played seven matches only if they advanced from a group of four, then won four knockout rounds. The 48-team format adds a round of 32, meaning a team that finishes second in its group must win five knockout games to reach the final. Even group winners face an extra match compared to the 2014–2022 era. The total match count for the tournament rises from 64 to 104, and the calendar compresses: the group stage still lasts roughly 12 days, but with more teams, the rest period between group matches can drop to three days for some sides. A team that reaches the final will have played seven matches in roughly 30 days, with only two or three days between knockout ties.

The 23-man squad was designed for a six-match tournament. In 1998, when the limit was last set, the World Cup had 32 teams and a maximum of seven matches only for the finalist, but the group stage had three matches in 11 days, then a round of 16, quarterfinal, semifinal, and final. The 2026 format compresses the knockout phase: the round of 32, round of 16, quarterfinals, semifinals, and final all occur within 18 days. A team that goes the distance will play five knockout matches in that span, with at most three days between any two games. The physical load is unprecedented.

Managers must now plan for the possibility that every outfield player will be needed. In previous tournaments, a typical champion used roughly 18–20 players over seven matches, with three or four fringe squad members rarely featuring. In 2026, the extra knockout round and tighter schedule mean even the 23rd player could be called upon for a start in the round of 32 if injuries or suspensions mount. The margin for error shrinks.

Some analysts, such as former Germany manager Joachim Löw, have argued that the expanded format actually reduces the burden on top teams because weaker opponents in the group stage allow for rotation. But the counterargument is stronger: the round of 32 introduces a high-stakes knockout match against a motivated opponent, often from a confederation with less rest time, which can produce upsets and force managers to field strong lineups earlier than they would like. The net effect is that squad depth matters more than ever.

Group Stage Redesign Alters Rotation Calculus

The group stage retains four-team groups, but the number of groups increases from eight to 12. Each group plays three matchdays, but the schedule is tighter: with 12 groups, FIFA must fit 72 group matches into roughly 12 days, meaning some teams will have only two days between matches. This is especially true for teams in groups that play on the first and last matchdays of the group stage. Managers must decide whether to rotate heavily in the second group game to preserve legs for the knockout phase, or to field a strong side to secure qualification early.

The introduction of a round of 32 changes the incentive structure. Under the old format, finishing first or second in the group mattered mainly for seeding in the round of 16. Now, finishing second means playing an extra knockout match—the round of 32—against a group winner from another group. That extra match carries injury risk and fatigue. Some managers may therefore prioritize winning the group to avoid the round of 32, which could mean fielding stronger lineups in the group stage than they otherwise would. Others may accept second place if it means resting key players in the final group match, gambling that they can win the round of 32 against a theoretically weaker opponent.

Tie-breakers also create more dead-rubber scenarios. With 12 groups, the four best third-placed teams advance to the round of 32, as in the 1986–1994 format. This means some teams will know before their final group match whether they have already qualified or been eliminated. Managers of qualified teams can rest starters; managers of eliminated teams may play youth or fringe players. But the uncertainty of third-place qualification means many groups will not have a clear dead rubber until the final matchday, complicating rotation planning.

Early yellow-card accumulation is another factor. Under current rules, a player who receives two yellow cards in the group stage is suspended for the round of 32. With three group matches, a player who picks up a yellow in the first game must be cautious in the second and third. Managers may choose to rest a player on one yellow in the final group match to avoid suspension for the knockout phase. This adds another layer to squad rotation.

Positional Versatility Becomes Selection Currency

With only 23 spots, managers increasingly value players who can perform multiple roles. A full-back who can shift into midfield, a central defender who can play as a defensive midfielder, a winger who can operate as a second striker—these versatile players become essential because they allow a manager to cover injuries without burning a substitution or changing formation. In a seven-match tournament, the ability to reshuffle without replacing personnel is a tactical advantage.

Consider the modern full-back. Many top teams now use full-backs who invert into midfield during possession, acting as a third central midfielder. A player like João Cancelo or Joshua Kimmich (when played at full-back) can cover both the defensive line and the midfield. In a 23-man squad, having one such player means the manager can carry an extra specialist attacker or defender instead of a dedicated backup for each position. The same logic applies to central defenders who can step into midfield, such as John Stones or Aymeric Laporte, who have experience in both roles.

Wingers who can play as second strikers are also valuable. In a 4-3-3 or 4-2-3-1, the wide forwards often cut inside and operate in central areas. A player who can start on the wing and then move into a central forward role if the main striker is injured or tired allows the manager to change shape without a substitution. This is particularly useful in knockout matches where substitutions are limited to five per game, and managers may want to save changes for extra time.

The trade-off is that highly versatile players are rare and often expensive. National teams may not have the depth of talent to find a player who can excel in two positions at the international level. Some managers prefer specialists who are elite in one role, trusting that the 23-man squad can cover injuries through direct replacements. But the trend in recent World Cups suggests versatility is increasingly prized: the 2022 champions, Argentina, carried several multi-position players, including Ángel Di María (winger/attacking midfielder) and Marcos Acuña (full-back/winger).

Injury Risk and Provisional List Management

The expanded tournament increases the likelihood of injuries. FIFA's medical report from the 2014 World Cup recorded a certain number of injuries per match, with muscle strains the most common. For a team playing seven matches, the expected number of injuries to its own players is roughly 5 per squad, based on average injury rates, but actual risk varies by position and playing style. Managers must plan for at least two or three players to miss matches due to injury, and possibly more if the team goes deep.

Clubs are increasingly demanding load-management data before releasing players for international duty. National team medical staffs now receive detailed training and match-minute records from clubs, and they use that data to identify players at high risk of injury. A player who has played 40+ matches in the preceding season may be given lighter training loads during the group stage, or may be omitted from the squad altogether if the risk is deemed too high. This creates tension between club and country, but managers must balance short-term tournament success with long-term player welfare.

The provisional squad list, which can include up to 55 players, becomes a crucial tool. Managers can name a larger provisional pool and then cut to 23 before the tournament, but the final squad is locked once the tournament begins. However, FIFA allows replacements for serious injuries before the first match. Some managers use the provisional list to invite players who are recovering from injury, giving them time to prove fitness. Others use it to test young players in friendlies before making final cuts.

The injury risk also affects positional planning. Most managers carry two specialists per position in the 23-man squad: two goalkeepers, two right-backs, two left-backs, four central defenders, four central midfielders, four wide attackers, and two strikers, with the remaining spots for versatile players. But if injuries hit a particular position, the manager may be forced to play a player out of position. The 2022 World Cup saw several teams, including France, lose multiple players to injury before the tournament, forcing last-minute changes. The expanded format amplifies that risk.

Set-Piece Specialists Earn Roster Spots

Set pieces have become increasingly decisive in knockout tournaments. At the 2018 World Cup, roughly 40% of goals came from set pieces (including penalties). In tight knockout matches, where open-play chances are scarce, a well-executed corner or free kick can be the difference. Managers are therefore more likely to include a dedicated set-piece taker, even if that player is not a guaranteed starter. The 2022 World Cup saw several teams, such as Morocco and Croatia, rely heavily on set-piece routines to progress.

A dedicated corner-taker reduces reliance on star players who might be fatigued or tightly marked. For example, if a team's best free-kick taker is also its best playmaker, the manager may want to preserve that player's energy for open play. Having a second specialist—perhaps a full-back or midfielder with a good delivery—allows the manager to delegate set pieces without sacrificing quality. Some teams even carry a player whose primary value is set-piece delivery, such as a long-throw expert.

The long throw is a specific weapon that can create chaos in the opponent's box. Players like Rory Delap (Stoke City) or, more recently, players in the Premier League have shown that a long throw can be as dangerous as a corner. In a 23-man squad, a long-throw specialist might occupy a spot that could otherwise go to a more well-rounded player. But the potential reward—a goal from a throw-in in a knockout match—may justify the selection.

The counterargument is that set-piece routines can be coached and executed by multiple players, and that dedicating a roster spot to a specialist is wasteful if that player cannot contribute in open play. Many top teams, such as Brazil and Germany, have multiple players capable of taking corners and free kicks, so they do not need a specialist. But for teams with a narrower talent pool, a set-piece specialist can be a marginal gain that tips a close match.

Goalkeeper Hierarchy Shifts to Three Starters

The goalkeeper position has traditionally been the most specialized: one starter, one backup, and one third-choice who rarely plays. But the expanded tournament may change that calculus. With seven matches possible, the risk of injury or suspension to the starting goalkeeper is higher. A team that loses its first-choice keeper in the group stage must rely on the backup for the knockout phase. If the backup is also injured, the third-choice keeper—often an inexperienced player—could be thrust into a high-pressure match.

The 2014 World Cup saw a notable example: Spain's David de Gea was left out of the squad entirely, with Iker Casillas as starter and Pepe Reina as backup. Casillas had a poor tournament, but Spain was eliminated in the group stage, so the backup was never needed. But in a deeper run, the lack of a third reliable keeper could be costly. Some managers now consider carrying three goalkeepers who are all capable of starting, rather than one starter and two backups. This means using one of the 23 spots on a third keeper who could realistically play if needed.

The penalty shootout is another factor. A goalkeeper who specializes in saving penalties can be a valuable asset in knockout matches. Some managers may choose to carry a penalty-saving specialist as the second or third keeper, even if that player is weaker in open play. For example, Argentina's Emiliano Martínez was not the first-choice keeper at the start of the 2022 World Cup, but his penalty-saving heroics in the quarterfinal shootout against the Netherlands and the final against France were crucial. Managers may now prioritize a keeper with a strong penalty record.

The trade-off is that carrying three starting-quality keepers reduces the number of outfield players. With 23 spots, using three on goalkeepers means only 20 outfield players, which may be too few to cover all positions, especially with the increased injury risk. Some managers prefer to carry two keepers and use the extra spot for a versatile outfield player. The optimal balance is still debated, but the trend in recent tournaments has been toward three keepers: 18 of the 32 teams at the 2022 World Cup named three goalkeepers in their 26-man squads (the limit was temporarily raised to 26 due to COVID-19). With the limit back to 23 for 2026, the decision is more constrained.

Youth vs. Experience Trade-Off Intensifies

The physical demands of seven matches in 30 days favor younger players, who generally recover faster between games. The average age of squads at the 2022 World Cup was 27.4 years, with the youngest squad (Ghana) averaging 24.7 and the oldest (Iran) averaging 28.9. For 2026, managers may skew younger to cope with the condensed schedule. Younger players are less prone to muscle injuries and can sustain high-intensity efforts over multiple matches with shorter rest periods.

However, experience matters in high-pressure knockout matches. Older players have tournament experience, can manage the emotional toll of a World Cup, and are less likely to be overwhelmed by the occasion. The 2022 final between Argentina and France featured several players over 30, including Lionel Messi (35), Ángel Di María (34), and Olivier Giroud (36). Their experience was crucial in navigating the tense moments of the match. A squad composed entirely of young players might lack the composure needed in a penalty shootout or a one-goal lead in the final minutes.

The trade-off means managers must balance age profiles. A typical squad might include a core of players aged 25–29, supplemented by a few younger players for energy and a few older players for leadership. The seven-match format may push that balance slightly younger: some estimates suggest the average squad age for finalists could drop by roughly 18 months compared to the 2022 average, as managers prioritize recovery capacity over experience. But the exact shift will depend on the specific players available to each nation.

Another factor is that younger players are often less expensive in terms of club release fees and are more willing to accept squad roles. Older veterans may demand starting spots or may be less willing to sit on the bench. Managers must manage egos as well as fitness. The 2026 World Cup will test whether the traditional wisdom of carrying experienced leaders outweighs the physical advantages of youth. The answer may vary by team, but the structural pressure of seven matches will force every manager to confront the trade-off.

Practical Implications: What This Means for Squad Builders

Given these challenges, how should a national team manager approach squad selection for 2026? One concrete approach is to use data analytics to model the probability of injuries and suspensions across seven matches. By simulating thousands of tournament scenarios, managers can identify which positions are most likely to need backup and which players offer the best combination of versatility and durability. For example, a simulation might show that carrying three specialist central defenders is riskier than carrying two central defenders plus a versatile midfielder who can drop back, because the expected number of matches missed by central defenders is higher due to their higher injury rate.

Another practical step is to prioritize players with a proven ability to play multiple positions in high-stakes matches. During the 2022 World Cup, France used Adrien Rabiot in both midfield and defense when injuries struck, demonstrating the value of such versatility. Managers should also consider the specific demands of the round of 32: this is a one-off knockout match against an opponent that may be physically fresher or more motivated. Selecting players who thrive in high-pressure, single-elimination games—such as those with experience in domestic cup competitions—could be a key differentiator.

Finally, the expanded tournament raises an open question: will the 23-man limit be revised for future World Cups? Some observers have called for increasing the squad size to 25 or 26, as was done temporarily in 2022 due to COVID-19 and the condensed calendar. The 2026 edition may serve as a test case, and if injuries or fatigue significantly affect the quality of play, FIFA could reconsider the limit for 2030. Until then, managers must work within the existing constraints, using every tool at their disposal to build a squad that can survive the seven-match grind.