Napoli beat Rangers 3-0 at Ibrox Park in Glasgow in the Champions League match valid for the second day of Group A of the group stage.
Politano's goal in the 68th minute on a penalty, Raspadori doubled in 84 and tris signed by Ndombele in '81.
Zielinski missed a penalty twice in the 55th minute.
After a 4-1 home win against Liverpool, Napoli have full points.
Instead, Juventus fell 2-1 at home to Benfica and remained at zero, taking the second consecutive defeat.
The bianconeri go ahead in the 4th minute with a header from Milik, but at the end of the first half they draw the equalizer from a penalty by Joao Mario.
In the second half on 10 'David Neres scores the winning goal that allows the Portuguese to remain at full points with six points.
For Juve, however, the qualification for the round of 16 becomes terribly complicated.