Napoli coach Maurizio Sarri feels they only have themselves to blame after seeing Juventus confirmed champions.
Sunday's 0-0 draw with Roma saw Juve confirmed as Scudetto winners for another season.
After Napoli's win at Sampdoria, Sarri remarked: “It goes without saying Juve are more powerful in every way. I haven't watched them enough to say if they were the best.
“We needed to go to bed early on Saturday night in Florence… The team suffered a psychological blow and felt it for the timing and the way that result came about. The only regret I have this season is that we lost the Scudetto in the hotel and not on the pitch.
“We lost three games and then always drew after that defeat. The team is sensitive and certainly vulnerable in some ways. We have to work and the Lega Serie A has to work a lot.
“We played after Juve 14 times in the last 16 rounds and seeing as Juve pretty much always win, that badly damaged us.
“This sport has become a business for everyone. It has to remain a sport, because if it's just business, then it will end pretty quickly. I will say that I admired the performance from a team that had nothing left to play for. I liked this performance."