Stefano Sensi headed the only goal just before the break as Inter Milan went top of Serie A with a 1-0 win over 10-man Udinese.
The visitors had Rodrigo De Paul sent off in the 35th minute following an off-the-ball incident involving Inter’s Antonio Candreva.
Sensi’s superb effort from Diego Godin’s cross proved enough for the home side who extended their perfect start to the new season to three games.
Maurizio Sarri has a potential injury crisis to contend with after watching his Juventus side hang on for a goalless draw at Fiorentina.
Douglas Costa and Miralem Pjanic limped off during the game and are both doubts for the midweek Champions League trip to Atletico Madrid.
Juve had keeper Wojciech Szczesny to thank for preserving their unbeaten start to the season as he saved well to deny both Dalbert Henrique and Franck Ribery.
Dries Mertens scored once in each half as Napoli eased to a 2-0 win over Sampdoria, who are still searching for their first points of the season after three games.
Copy provided by Press Association Sport
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