Juventus and Napoli both won on Wednesday ahead of Saturday’s top-of-the-table clash between the sides.
Paulo Dybala and Blaise Matuidi scored to give the Turin giants a 2-0 win over Bologna and continue their perfect record in Serie A this season.
Napoli beat Parma 3-0 thanks to a goal by Lorenzo Insigne and a Arkadiusz Milik double.
Juve, who are bidding for an eighth consecutive scudetto, have 18 points from six games, while Napoli have 15.
Lazio climbed to third, beating Udinese 2-1 away for their fourth straight league victory.
AS Roma ended a run of poor form by thrashing Frosinone 4-0 ahead of Saturday’s derby in the capital.
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