Fiorentina qualified for the Europa League while Stephan El Shaarawy scored his first goal in seven months for AC Milan.
A last-gasp winner from substitute Marco Sau lifted Cagliari to a 1-0 victory at Cesena.
Napoli and Fiorentina boosted their European qualification hopes with victories over Cesena and Parma in Serie A on Monday.
Napoli kept their hopes of qualifying for the Champions League next season alive with a 3-2 win over Cesena.
Napoli's hopes of Champions League qualification suffered a setback as they drew 2-2 at rock-bottom Parma in Serie A on Sunday.
Cesena's relegation from Serie A was confirmed as they let a two-goal lead slip to lose 3-2 at home to Sassuolo.