As the winners of the 2017–18 EuroCup Basketball, Darüşşafaka qualified for the European top-tier level 2018–19 EuroLeague season.

[1][3] The labels in the parentheses show how each team qualified for the place of its starting round:[1][2] The schedule of the competition is as follows.

For the draw, the teams were seeded into six pots, in accordance with the Club Ranking, based on their performance in European competitions during a three-year period and the lowest possible position that any club from that league can occupy in the draw is calculated by adding the results of the worst performing team from each league.

The team that finished in the higher Top 16 place will play the first and the third (if it is necessary) legs of the series at home.

The playoffs involves the eight teams which qualified as winners and runners-up of each of the four groups in the Top 16.