MILAN --

Napoli and Juventus both recorded narrow victories against relegation-threatened sides to remain first and second in Serie A on Sunday ahead of their showdown in Turin next weekend.

Juventus, which went on to win 2-0, appeared to be on the verge of moving level at the top when Juan Cuadrado broke the deadlock in the 73rd minute at Frosinone with the score in Naples.

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Gonzalo Higuain then converted a penalty against 10-man Carpi moments later for his 24th goal in 24 league matches this season.

There was a touching moment before the match as Napoli fans held up prints of Kalidou Koulibaly's face in a show of support after he was racially abused by Lazio fans in midweek.

Napoli, a 1-0 winner, remained two points ahead of Juventus. Inter Milan drew 3-3 at Hellas Verona.