Prior to the game ending in a mass brawl, Oleksandr Zinchenko and Jack Grealish enjoyed a leisurely warm-up playing keepy-uppy with each other over 50 yards apart.
Manchester City emerged from the game in Madrid victorious on aggregate over the two legs with the second leg being marred by ugly scenes at the end of the game.
Kevin De Bruyne's first leg goal proved the difference as City advanced beyond a committed, if at times overly aggressive, Atletico Madrid side.
Two substitutes on the night, Zinchenko and Grealish, have brought delight to social media after a video taken from the stands shows them skilfully booting the ball to one another from opposite ends of the same half at the Wanda Metropolitano.