Juventus' Polish goalkeeper Wojciech Szczesny (C), Juventus' French midfielder Blaise Matuidi (R) and teammates acknowledge the public after the Italian Serie A football match Juventus vs Napoli on September 29, 2018 at the Juventus stadium in Turin. (AFP)

Defending Serie A champions Juventus have come from behind to beat Napoli 3-1 at home.

Napoli got on the scoresheet when Dries Mertens tapped into an empty net early in the match. But, Mario Mandzukic equalized in the 26th minute.

The Old Lady took the lead after the break, when Mandzukic scored his second in the 49th minute.

Finally, with 13 minutes remaining Leonardo Bonucci secured the 3-1 victory for Juventus as they made it seven wins out of seven matches and are top of the table on 21 points.