Which leagues field the youngest players?
Average age of the players who actually appeared, season by season. A young league is usually a selling one.
World Cup (International) is the youngest of the lot — average age: 29.55.
| League | Average age | Player-seasons |
|---|---|---|
| 1. World Cup International | 29.55 | 20,800 |
| 2. AFC Champions League Elite International | 28.48 | 57,100 |
| 3. CONMEBOL Libertadores International | 28.45 | 88,800 |
| 4. J1 League Japan | 28.2 | 49,800 |
| 5. Super League China | 28.08 | 38,300 |
| 6. K League 1 South Korea | 27.85 | 33,900 |
| 7. CONMEBOL Sudamericana International | 27.79 | 105,300 |
| 8. Serie A Brazil | 27.75 | 51,300 |
| 9. Super League 1 Greece | 27.68 | 31,400 |
| 10. Pro League Saudi Arabia | 27.59 | 36,300 |
| 11. CONCACAF Champions League International | 27.31 | 31,900 |
| 12. Liga I Romania | 27.31 | 19,900 |
| 13. Liga Profesional Argentina Argentina | 27.23 | 85,100 |
| 14. Süper Lig Türkiye | 26.79 | 38,900 |
| 15. UEFA Nations League International | 26.78 | 19,400 |
| 16. Super Liga Serbia | 26.63 | 30,600 |
| 17. UEFA Champions League International | 26.51 | 133,700 |
| 18. Liga MX Mexico | 26.48 | 40,700 |
| 19. UEFA Europa Conference League International | 26.44 | 135,600 |
| 20. La Liga Spain | 26.4 | 43,700 |
Showing the major competitions. Include every competition
Age is taken from the year of birth against the season played, not from the profile — that carries the age today, which for an old season would be a decade out. Only players with an appearance count.