Watch as Milan ran riot in Bergamo with Davide Calabria scoring after 28 seconds and Rafael Leao rifling into the top corner, before a late Atalanta comeback.
The Rossoneri found the net before the 30 second mark at the Gewiss Stadium, Theo Hernandez sending fellow full-back Calabria clear on goal.
Mike Maignan and Tonali made a desperate double block to deny Duvan Zapata and Ruslan Malinovskyi, but Tonali then caught Remo Freuler in possession for 2-0.
Leao completed a counter-attack with Theo Hernandez for the third, yet Atalanta gave them a late scare with Duvan Zapata’s penalty for a Junior Messias handling offence and Mario Pasalic tap-in.
I really think that scoreline actually flatters Atalanta. They were unlike themselves and Milan did so much well.