A total of 42 teams are expected to play in the play-off round: the 36 winners of the third qualifying round, and the 6 Champions Route losers of the 2018--19 UEFA Champions League third qualifying round.
A total of 94 teams are expected to play in the first qualifying round: 86 teams which enter in this round, and the 8 winners of the preliminary round. The ten winners of the Champions Route second qualifying rounnd and the ten losers of the Champions Route of the 2018--19 UEFA Champions League second qualifying round.