Substitute Nicola Sansone headed in the winner six minutes from time as Sassuolo prevailed 2-1 at home to Napoli.
On the opening weekend of Serie A, Napoli captain Marek Hamsik got his team off to a flying start at the Stadio Citta del Tricolore with a third-minute goal.
He struck a right-footed shot past Sassuolo goalkeeper Andrea Consigli from six yards.
Antonio Floro Flores equalised for Sassuolo in the 32nd minute when his right-footed effort beat Napoli goalkeeper Pepe Reina.
The hosts suffered...