World Cup 2026: What have we learned from a thrilling first week? - BBC Sport
bbc.com
The first week of a 48-team World Cup is a live experiment in whether expanding a tournament beyond its optimal size dilutes quality or unlocks genuine surprise — complexity theory in cleats.
Complexity TheoryTournament Design TheoryCompetitive BalanceRegression to the Mean
Theory Briefing
- All 48 teams have now played at least once across three host countries, making this the largest World Cup group stage in history.
- The expanded format creates more early matches, raising questions about whether parity or predictability dominates when more nations compete.
- Early results across a jam-packed seven days offer the first real data on how tournament design shapes competitive outcomes.