The teams that end up fourth in the 2018/19 UEFA Nations League A are relegated to the 2020/21 UEFA Nations League B .
The winners of each group will advance to the UEFA Nations League Finals , and the third-placed team of each group will be relegated to the 2020–21 UEFA Nations League B.The Nations League Finals will take place in June 2019 and be played in a knockout format , consisting of the semi-finals , third place play-off , and final .
2018–19 UEFA Nations League A