The 2026 World Cup was the first ever played with 48 teams, 12 groups and 104 matches, and it changed the tournament in ways that will shape every edition that follows. The old 32-team format, used from 1998 to 2022, is gone. In its place is a bigger, longer, more geographically spread competition, with a new round of 32, eight third-placed teams advancing from the groups, and a schedule that ran from 11 June to 19 July across 16 cities in three countries. Now that it is over, what did we actually learn?

The first lesson is that expansion did not dilute quality as much as feared. Only six 11-versus-11 games were won by four goals or more, and only two by five or more: Germany's 7-1 win over Curacao and Portugal's 5-0 win over Uzbekistan. The four debutants, Cape Verde, Curacao and two others, did not win a game between them, but they were competitive: Cape Verde drew with Spain and Uruguay and took Argentina to extra time, while Curacao held Ecuador goalless. The gap between the elite and the rest has narrowed, and the expanded format gave that progress a stage.

The second lesson is about the third-place rule. For the first time since the 1994 World Cup in the United States, which was also the last 24-team edition, finishing third in a group could be enough to advance. In 2026, the best eight of the 12 third-placed teams went through, and as few as three points proved enough, as Senegal discovered. Critics worried this would reduce jeopardy in the final group games, and there were matches where both teams seemed content with a draw. But the rule also kept more nations alive for longer, and it rewarded teams like Cape Verde, who finished second in their group anyway but would have been eliminated under the old format's stricter maths.

The third lesson is about upsets and favourites. The tournament produced 25 upsets by one ranking-based measure, one every 4.12 games, slightly fewer than in 2022 but far more than in 2014. Only two of the ten pre-tournament favourites reached the final. Germany lost to Paraguay on penalties in the round of 32, Brazil lost to Norway in the last 16, and Uruguay went home from the group stage. The new round of 32, played by 32 of the 48 teams, meant that one bad night ended a campaign earlier than ever for the big names, and the giants who survived, Spain above all, did so by being almost impossible to score against.

The fourth lesson is logistical, and it may be the most important for 2030. Sixteen cities across three countries and four time zones is a huge undertaking for fans, teams and organisers. Distances were enormous, transport perimeters caused long queues at venues like MetLife, and summer heat was a recurring issue. The fans who enjoyed 2026 most were those who planned by regional cluster rather than chasing one team across the continent. If future hosts learn that lesson, and if FIFA learns that a great stadium is not just a big one, the 48-team World Cup could become the best version of the tournament yet. Spain's triumph, built on control and patience, showed that even in a bigger, wilder tournament, the fundamentals still win.

Looking ahead, the 2030 World Cup will be even more spread out, with matches across three continents, and the lessons of 2026 will matter more, not less. Organisers will need to think harder about travel clusters, rest days between long-haul trips, and heat management in summer tournaments. Teams will need to think harder about squad depth, because 104 matches across 39 days punish thin squads, and about defensive organisation, because the teams that conceded least in 2026 went furthest. And fans will need to plan smarter than ever: pick a region, book around the real stadium address, and leave buffer days for transport delays. The first 48-team World Cup proved the format can work. The next one will show whether anyone learned from it.