league match; league competition; round robin
Refers to a competition format where all participants play each other, common in sports and games.
今シーズンのリーグ戦は来月から始まります。
This season's league competition starts next month.
リーグ戦では、全チームが総当たりで対戦する。
In a round robin, every team plays against all the others.
This year's tournament will be held in a league format.
His team was chosen to compete in the national league.
The team won the league championship three years in a row.