After a week-long break that coincided with the first midweek round of the Serie A season, the Champions League returns for matchday four with seven matches alongside those involving Inter and Roma. The results are already beginning to shape the league phase standings.
Galatasaray v Stuttgart and Shakhtar v Sporting Lisbon get things going at 18:45. Atlético Madrid v Bayern Munich, Barcelona v Aston Villa and Villarreal v PSG are among the other big matches and emotionally charged encounters.

