AC Milan came from a goal down to defeat city rivals Inter 2-1 to lift the Italian Supercup in Beijing on Saturday.
Manchester United target Wesley Sneijder, whose future at Inter has been subject of intense speculation, put Inter a goal ahead on 21 minutes at the "Bird's Nest" Olympic Stadium in the steamy Chinese capital.
But AC struck back with a quick-fire second-half double to leave Inter stunned.
First, former Inter striker Zlatan Ibrahimovic netted on the hour to draw the reigning Serie A champions level.
And just eight minutes later Kevin-Prince Boateng scored what turned out to be the winner in the traditional curtain-raiser to the new league season.