Surprise package Sassuolo missed the chance to go top of Serie A as they were held to a 0-0 draw at home by Udinese on Friday.
Sassuolo dominated possession but could not turn that into chances on a frustrating night, managing one attempt on target.
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The draw left second-placed Sassuolo unbeaten this season on 15 points from seven games but a point behind leaders AC Milan, who host Hellas Verona on Sunday.
Udinese remain second from bottom with four points.