Lorenzo Insigne scored a double either side of a Simone Verdi goal as Napoli dominated Torino 3-1 to join Juventus on top of Serie A on Sunday.

Carlo Ancelotti's side has 12 points from five games, equal with champion Juventus which can pull ahead again when it travels to promoted Frosinone later on Sunday.

Ancelotti's side gave a dominant display in Turin following its uninspiring goalless draw at Red Star Belgrade in the Champions League midweek.

Insigne opened the scoring after four minutes in Turin, and played a role in all three goals. The Italian international got the first after Emiliano Moretti's clearance fell to Nicolas N'Koulou, with the rebound favouring Insigne who finished off under the crossbar.

Verdi added the second with a half-volley on 20 minutes. Torino pulled one back after the break when Andrea Belotti slotted in a penalty. But Insigne restored Napoli's two-goal lead after 59 minutes when a Jose Callejon shot bounced off the inside of the far post and into the path of forward.

Torino is in 13th position with five points from as many games.

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Other fixtures and results

Juventus heads to Frosinone on Sunday looking to keep its 100 percent record, days after Cristiano Ronaldo was sent off in the Champions League.

Frosinone is second from the bottom of the league, with just one point, and are still waiting for its first goal.

Inter Milan snatched a late 1-0 win against Sampdoria in Genoa on Saturday to kickstart its campaign as it move up to seventh.

AS Roma travels to Bologna looking to build confidence after losing 3-0 in the Champions League at Real Madrid. Eusebio Di Francesco's side has not won since its opening game against Torino in August.