Napoli get Benitez off to a flying start

Slovakia forward Marek Hamsik scored twice after Spaniard Jose Callejon opened the scoring on his debut for last season's runners-up.

(AAP)

Inter Milan spluttered to a 2-0 win over Genoa with late goals from Yuto Nagatomo and Rodrigo Palacio in Walter Mazzarri's first league game as coach and AS Roma gave Rudi Garcia a winning start by beating promoted Livorno 2-0 away.

Hernanes and Antonio Candreva, from a penalty, scored in the first 20 minutes to set up a 2-1 win for Lazio over Udinese.

(Reporting By Brian Homewood; Editing by John Mehaffey)