From Zero to Five: How Substitutions Changed the Game

For the first ninety years of organised football, teams played with whoever started. Injured players hobbled on the wing, exhausted midfielders walked through the final minutes, and the word substitution did not exist in the rulebook. Today managers make five changes across three windows, and entire tactical plans are built around the bench. The road from zero to five substitutions is one of the quietest and deepest revolutions in the sport.

Each expansion of the rule changed not just matches but squads, training and careers. This is how it happened, step by step.

The era of playing through it

The old game had a simple answer to injury: carry on. Goalkeepers with broken bones moved to the wing; outfield players with torn muscles stood in goal. The 1956 FA Cup final produced the famous image of Manchester City's Bert Trautmann playing the last 17 minutes with a broken neck, an injury he discovered days later. Teams that lost a player played with ten, and clubs carried first-team squads of barely more than eleven names.

Pressure from doctors and players eventually cracked the door. Substitutes for injured players were permitted at the 1958 World Cup, the first time replacements appeared at the tournament. England followed in 1965: one substitute, for injury only. On 21 August 1965, Keith Peacock of Charlton replaced the injured goalkeeper Mike Rose eleven minutes into the match at Bolton, becoming the first substitute in Football League history.

• 1958: replacements for injured players first allowed at the World Cup.
• 1965: one substitute, injury-only, introduced in England; Peacock is the first used.
• 1970: World Cup allows two substitutes per match, for any reason.
• 2020: five substitutions approved as a pandemic measure, made permanent in 2022.

From ambulance to chess piece

Once replacements could be tactical rather than medical, managers discovered a second match happening inside the match. The 1970 World Cup in Mexico, with two subs allowed, produced the first famous interventions; by the 1990s the specialist substitute was a defined role, and Ole Gunnar Solskjaer built a career, and a Champions League final, on coming off the bench.

The numbers crept upward with the sport's speed. Three substitutes became standard in the mid-1990s, after years in which teams could name two outfielders plus a reserve goalkeeper. Squads grew from sixteen to twenty-five; sports science tracked which players faded at which minute; and managers began timing changes like poker bets.

Five subs and the new squad game

The pandemic compressed the 2020 calendar, and the law-making International Board approved five changes as a welfare measure, formalised permanently in June 2022 with a condition: the five changes must be made in a maximum of three windows, plus half-time, to stop time-wasting. The debate was fierce and largely geographical: big squads gain depth advantages, smaller clubs feared a talent multiplier for the rich.

What five changes actually change

The modern evidence is still accumulating, but the patterns are clear. Pressing intensity can be sustained because legs are replaceable; young players get more minutes earlier; and managers of deep squads can field a second front line after 60 minutes, as France did in the 2022 World Cup final, when Didier Deschamps' changes nearly overturned Argentina in twelve minutes. The counterargument holds too: the rich rotate more, and comebacks by fresh superstars are now partly a budget story.

The rulebook keeps moving. Permanent concussion substitutes, an additional change outside the five, have been trialled since 2021 in England and elsewhere, extending the same welfare logic that produced the original rule. And the 2022 World Cup final offered the perfect modern illustration: Deschamps replaced two starters before half-time, and the fresh legs of Kolo Muani and Thuram nearly overturned Argentina in the last twelve minutes, a final swung by the bench as much as by the starting eleven.

From Trautmann's broken neck to five fresh legs in the final half hour, the rule on replacements tracks football's journey from endurance test to squad sport. The manager who once picked eleven players now picks sixteen, and the bench that started as an ambulance bay has become the place where the biggest matches are increasingly decided.