#2 Big games are won on mistakes
Yes, the cliche rings true tonight. Olympique Marseille looked capable of sweeping Atletico Madrid away in the first quarter of an hour and could have even gone ahead had they been clinical in front of goal.
Marseille then played themselves into the hands of Simeone's side as Mandanda's poor pass couldn't be trapped by Anguissa inside their own half. Griezmann needs no invitation to put them away.
They could've done better about the second goal as well but once the ball fell to Griezmann, there was no stopping them. If Marseille had taken their early chance and had been more resolute at the back, they could have had a real chance on the night.
But they let the game slip through their hands and in the end, made it really comfortable for their Spanish counterparts.