Leroy Sane's first-half effort, and a late Inter own goal, gave Bayern Munich an opening game victory over the Italians, as the six-time winners subjected Simone Inzaghi's side to a 2-0 home defeat.
Sane opened the scoring in the 25th minute of the game in Milan, with a right-footed strike from inside Andre Onana's penalty area, after the former Manchester City speedster latched onto a Joshua Kimmich through ball.
And Italy international defender - and captain on the night - Danilo D'Ambrosio handed the Germans a gift of a second after shanking the ball into his own net in the 66th minute, when trying to clear the ball off the line.