Arkadiusz Milik fired a second-half double as Napoli moved top of Serie A following a 3-1 home win against Bologna.
Juventus celebrated winning the Serie A title for the fifth year in a row by beating relegation-threatened Carpi 2-0.
Inter Milan left Napoli's Serie A title hopes hanging by a thread on Saturday after a 2-0 home victory.
Goalkeeper Gianluigi Buffon added another record to his decorated career during Juventus' 4-1 win over local rivals Torino.
Inter Milan scored two late goals to beat Bologna 2-1 at San Siro and move above Fiorentina into fourth place in Serie A.
Fiorentina moved up to third in Serie A after beating Inter Milan 2-1 on Sunday in a game that featured three red cards.