Jose Callejon scored the winner as Napoli closed in on Roma to within three points in the Serie A table.
A single goal from Rodrigo Palacio gave Inter the 1-0 victory over Torino as they seal the first win after two consecutive draws.
Sylvain Guintoli heads the table after winning the second race at Phillip Island as Eugene Laverty suffers technical problems.
Eugene Laverty claims season's opening Superbike race at Phillip Island, coming back from poor start to top Melandri and Guintoli.
Wales began their Six Nations defence with an unconvincing 23-15 victory over Italy at the Millennium Stadium on Saturday.
Don't miss this week's What Did You Love featuring what could be the worst miss in soccer history and an intimidating Haka dance.
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Juventus defeated a feisty Fiorentina by the minimum difference in a terrific showdown in which both teams showed similar form.