Napoli coach Luciano Spalletti was delighted after victory over Roma.
Victor Osimhen scored the opener for Napoli, before Stephan El Shaarawy came off the bench to equalise.
However, in the final minutes, substitute Giovanni Simeone struck for Napoli as they won 2-1 victory.
Spalletti later said: You win these games if you prove that you are determined to win, from the kit staff to the last man on the bench.
These are complicated matches, but those who came on proved that they were already in the game from the bench. That is a fundamental quality for our team, because these long seasons with this intensity, if you don't have everyone within the daily work and enthusiastic about what their teammates do, eager to play alongside their teammates rather than just take their place, then you won't get these results.
We play like that because of the characteristics we have at our disposal. When you are facing a five-man defence, if we play inside and pass it down the right, then cross to the left-back, then they don't have time to cover the space on the other side and we can reach the edge of the box.
We didn't have as much courage and quality as usual in moving the ball around tonight, so consequently that helped Roma with the high press. We also didn't give Osimhen the right service, but he did well to find the spaces anyway."
On Osimhen, Spalletti also said: There is everything in that goal, technical quality, character to juggle the ball between two defenders, then he hit this rocket into the net, as he really has got a cannon for a foot. He has physical strength, accepts the challenge, tracks back to help, is good in the air. He is the complete package."