Juventus extended their lead at the top of Serie A to two points after coming from 3-1 down to snatch a draw in Naples this evening.
The Turin club scored all three of their goals in the second period of what was an end-to-end encounter between two of the division's strongest sides.
Slovakian Hamsik also missed a penalty after a quarter of an hour when he was made to retake the kick because of encroaching from Gokhan Inler.
However, two goals in eight minutes ensured that Juve wouldn't suffer their first loss of the season.
Antonio Conte's side are two points clear of AC Milan and Udinese at the top of the league while Napoli lie nine points adrift of the leaders.