Juventus regained the Serie A top stop on Wednesday when a penalty procured and converted by Cristiano Ronaldo gave the reigning champions a 2-1 win over Genoa.
Defender Leonardo Bonucci had headed the Turin giants in front in the first half only for Christian Kouamé to level for Genoa with a fluke goal that went in despite him mishitting it.
Juve have 26 points from 10 games, one point more than Inter, who beat Brescia 2-1 on Tuesday.
Third-placed Atalanta drew 2-2 at Napoli, who fell to sixth due to the dropped points.
AS Roma thrashed Udinese 4-0 and climbed to fourth despite having defender Federico Fazio sent off in the first half.
Lazio are fifth after beating Torino at home by the same scoreline.
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