Neither side could find the net in the Milan derby, while Roma missed the chance to go second.
Parma's surprise revival came to an end at Genoa as the Rossoblu claimed a 2-0 victory at the Stadio Luigi Ferraris.
Genoa left Cagliari even deeper in relegation danger with a 2-0 win at the Stadio Luigi Ferraris on Saturday.
Genoa avoided a third straight defeat as they claimed a 1-1 draw against Udinese at the Stadio Luigi Ferraris.
Juventus closed in on a fourth straight Serie A title after a 2-0 victory over Empoli.
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