Juventus slumped to a shock 2-1 defeat at lowly SPAL on Saturday to put their Serie A title celebrations on hold, as Edin Dzeko fired Roma into the Champions League places with the only goal in a 1-0 win over Udinese.
AC Milan host Udinese on Tuesday in the first of a crucial Serie A double-header before taking on title-holders Juventus in Turin four days later in a week which could be crucial for their Champions League ambitions.
Moise Kean scored a brace as Juventus warmed up for next week's Champions League showdown with Atletico Madrid by easing past lowly Udinese 4-1 to up open a 19-point lead at the top of Serie A on Friday.
Duvan Zapata got Atalanta back winning ways in Serie A after consecutive losses with hat-trick against former club Udinese on Sunday that brought them to within touching distance of the Champions League places.
Alessio Romagnoli scored the only goal after 97 minutes as AC Milan reclaimed fourth place in Serie A amid drama at 10-man Udinese on Sunday ahead of Lazio who earlier crushed SPAL 4-1 with Ciro Immobile bagging a brace.
Juventus widened the gap at the top of the Serie A to nine points with a convincing 2-0 victory over Udinese. Rodrigo Bentancur and Cristiano Ronaldo grabbed the goals, though Massimiliano Allegri will argue there should have been more.