Gonzalo Higuain scored his first Serie A goal for AC Milan but they were held to a 1-1 draw at Cagliari on Sunday.
Napoli missed the chance to go level with Serie A leaders Juventus after tumbling to a 3-0 defeat at Sampdoria.
Big-spending Inter Milan lost 1-0 at Sassulo on Sunday, as Roma and SPAL both chalked up away victories.
Crotone beat Lazio 3-1 on the final day to ensure survival, as Empoli went down after losing at already-relegated Palermo.
Napoli took advantage of Roma's derby defeat to close to within one point of second place in Serie A with victory over Inter Milan.
Juventus took a giant leap towards securing an historic sixth consecutive Serie A title by thrashing hapless Genoa 4-0 in Turin.
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