Napoli coach Carlo Ancelotti was furious after their 0-0 draw with Torino.
Ancelotti branded their finishing as "unacceptable".
"We lacked a goal, just as we did against Fiorentina. We played with focus, motivation, determination, but it's unacceptable to have 18 scoring opportunities over two games and not score any of them," he told Sky Sport Italia.
“Evidently, we need to work in training on the finishing, crosses, movements, decision-making. I defy anyone to say this team doesn't play good football, but we are not turning the chances into goals.
“We all care about doing better and we do practice, but clearly we need to look deep down at the details, because with my modest experience, I can tell this is a team that plays good football.
“It's disappointing, because if you play badly, then you can handle a draw. If we play well and don't win, we have nobody to blame but ourselves."