Marek Hamsik says Napoli's dressing room are convinced they can clinch fourth place and Champions League qualification.
Napoli now lie sixth in Serie A, five points adrift of fourth place with four games remaining this season.
"We are satisfied. I have played well. I am sorry to have missed a golden opportunity in the 14th minute," Hamsik wrote on his official website.
"We are very happy to have got three important points away to Bari. We have redeemed ourselves for the defeat at home to Parma last week.
"We will fight until the end of the Champions League. There are still four games left. There are 12 points in play."