A question of volume by Thibaut Courtois against a moment of magnificence from David Raya? It's the Arsenal man who just shades it, his double save from Mateo Retegui's penalty was that good. Admittedly the header on the rebound by the Atalanta striker was as tame as you will see in the Champions League this season but Raya still had to scramble halfway across the goal after what was a very good initial save.

The Champions League returned with a ton of fun in matchday one, but what have we learned after seeing all 36 teams in action? Let's break down the best players, the best matches and which teams are rising or falling.