2021–22 UEFA Champions League
The matches were played on 14–15 September, 28–29 September, 19–20 October, 2–3 November, 23–24 November, and 7–9 December 2021. The top two teams of each group advanced to the round of 16. The third-placed teams were transferred to the Europa League knockout round play-offs, while the fourth-placed teams were eliminated from European competitions for the season.