The UEFA Nations League is a biennial tournament created in 2018 by UEFA in order to replace the traditional friendly matches for national teams (until then played on dates set by the FIFA International Match Calendar) with a more exciting (and profitable) competition.
In the first edition of UEFA Nations League (spanning over the 2018-19 European season), the 55 national teams from member associations of UEFA are divided into four divisions or leagues (A, B, C, D) based on their UEFA coefficients at the end of the 2018 FIFA World Cup qualifiers, each league in time composed of four groups. At the end of the league stage, group winners will be promoted to the upper division (B → A, C → B, D → C) and group losers will be relegated to the level below (A → B, B → C, C → D). The four group winners in the top-tier League A will enter a Final Four to decide the UEFA Nations League champion.
• Official UEFA scores and statistics extended and corrected with multilingual edition. All the names of players, referees, stadiums, and cities are written in their original spelling (or a standard transcription into Latin characters, in the case of other alphabets). This is the reason why some names may slightly differ in form with respect to other unstandardized information sources.