Arkadiusz Milik’s stoppage-time winner helped Carlo Ancelotti’s men claim their 12th league win of the season.
The 27-year-old featured for the entire duration of the game and made three tackles to ensure they keep a clean sheet and he took to the social media to show his delight on leading his side to a win.
“Good and determined: we have proven to be a great team. And what a pride [to have] the captain's band from the first minute,” Koulibaly tweeted.
Bravi e determinati: abbiamo dimostrato di essere una grande squadra. E che orgoglio la fascia di Capitano dal primo minuto!— Koulibaly Kalidou (@kkoulibaly26) December 16, 2018
🇮🇹 #CagliariNapoli 0-1 #SerieA
🇸🇳 #KK26 #famiglia
💪🏿 #DifendoLaCittà pic.twitter.com/prxOHcQUQr
Napoli play host to SPAL in their next league game on December 22.