Napoli have dedicated their qualification for next season's Champions League to the fan injured in clashes before Saturday's Coppa Italia final.
Ciro Esposito remains in hospital after being shot before the Partenopei's victory over Fiorentina, and their thoughts were with the 29-year-old after they beat Cagliari 3-0 on Tuesday.
Captain Marek Hamsik said after the game: "We wanted to follow our Coppa Italia title by clinching our place in the Champions league with a victory over Cagliari.
"We want to dedicate our return to Europe to Ciro in the hope that he can get well soon."
During their win, Napoli fans displayed a banner reading "Ciro hold on" at the San Paulo.