The Champions League has moved into its decisive stages. Just eight teams are still in Europe's most prestigious club competition. After four entertaining first legs, that number will soon be halved, leaving solely the continent's elite.
Who were the players and teams that really stood out across the four matches on Tuesday and Wednesday? What will coaches have taken from these first clashes in order to improve come the return fixtures?
Here are six lessons from this week's opening clashes, as another classic round of top-class football comes to a close.