How it works
Four leagues, and a reason to win every match
The field is split into Leagues A, B, C and D by ranking, each divided into small groups played home and away. Group winners are promoted, bottom sides relegated — so a September fixture between mid-ranked nations carries real consequence, which is exactly what the old friendly calendar lacked.
At the top, League A's group winners advance to knockouts and a June finals week for the trophy itself. Further down, performance opens play-off routes into the European Championship and World Cup — several nations have reached major tournaments through Nations League standing alone.