Napoli fell to a surprise defeat at home to Atalanta, as Duvan Zapata and Mario Pasalic scored to overturn Dries Mertens' opener and move their side into fifth place.
The home side started the brighter of the two, with the potent strike-force of Dries Mertens and Arkadiusz Milik - with 28 goals between them in Serie A prior to kick-off - looking too much for La Dea to handle.
The former was particularly lively, and after sparing Andrea Masiello's blushes by losing his footing after the defender misjudged the bounce of the ball and let him through, he got on the end of a Kevin Malcuit cross to poke his side into the lead just before the half hour mark.