Victor Osimhen failed to score for a third straight game in all competitions as Napoli were shocked at home by Sassuolo on Sunday.
Osimhen, restored to the starting lineup by Gennaro Gattuso after getting sent off in an ill-fated thirty minute cameo in the Europa League win at Real Sociedad, has now scored just once in seven games since his club record move to Naples.
A Manuel Locatelli penalty on 59 minutes and Maxime Lopez’s goal in added time condemned Napoli to a first loss on the pitch in Serie A this season.
Napoli’s only other loss in the league was a 3-0 defeat awarded against them for failing to honour a matchday three game at Juventus.
The defeat means Gattuso’s side drop out of the top four to fifth while Sassuolo move up to second.
For Osimhen though, while he retains the trust of his manager and the support of his teammates, he must start showing why the club spent a record outlay on acquiring his services.