Atalanta snatched a 3-2 victory at home to AC Milan thanks to a back-heel flick in added time from substitute Luis Muriel after a double from striker Ademola Lookman in Serie A on Saturday.
Locked in battle for a place in the Champions League final, AC Milan and city rivals Inter are also vying with each other in Serie A for a spot among Europe's elite next season and will treat their remaining league tests as seriously as their semi.