2020 ScheduleAll times ET
A goal from record signing Victor Osimhen and two late saves by goalkeeper David Ospina gave Napoli a 1-0 win over Bologna.
Luis Alberto set Lazio to a 2-1 win over Bologna with a superb solo effort in Serie A on Saturday after the visitors had a goal disallowed.
Irrepressible Sassuolo scored three goals in 13 minutes as they charged back from 3-1 down to win 4-3 at Bologna in their Serie A derby on Sunday.
AC Milan's veteran forward Zlatan Ibrahimovic scored twice and also missed an open goal to give his side a 2-0 win over Bologna.
Mihajlovic, 51, guided Bologna to a 12th-placed finish in the Italian top flight last season despite being treated for leukaemia.
Bologna raced to a two-goal lead in five minutes and were pulled back to 2-2 before a stoppage-time goal gave them a 3-2 win over Lecce.
Atalanta took their Serie A tally to 95 goals, the highest by any side in a single season for more than 60 years, when they beat Bologna 1-0.