The ten winners in the play-off round ties join 22 automatic entrants in the 32-team group stage. The clubs are split into eight groups of four teams, who play home and away against each of their pool opponents between September and December to decide which two teams from each section advance to the first knockout round.
The third-place finishers in each group enter the UEFA Europa League round of 32.
Group A: Club Atlético de Madrid, Juventus, Olympiacos FC, Malmö FF
Group B: Real Madrid CF, FC Basel 1893, Liverpool FC, PFC Ludogorets Razgrad
Group C: SL Benfica, FC Zenit, Bayer 04 Leverkusen, AS Monaco FC
Group D: Arsenal FC, Borussia Dortmund, Galatasaray AŞ, RSC Anderlecht
Group E: FC Bayern München, Manchester City FC, PFC ...