Napoli hat-trick hero Dries Mertens was delighted with victory at Cagliari.

Napoli enjoyed a 5-0 win in Sardinia.

“We tended to have fine performances, only we missed chances or made errors at the back," Mertens told Sky Sport Italia.

“We also tended to get it wrong after a Champions League game, but now we're doing it all right. We've learned from our mistakes.

“The performances were always there, we just made errors and we have now learned not to make them any more. This team is strong and we can frighten other sides in Italy and Europe."