Juventus 1-0 Sassuolo
Juventus moved six points clear at the top of Serie A as Gianluigi Buffon set a new club record by keeping a 10th consecutive league clean sheet.
Paulo Dybala curled in off the inside of the post for his 14th goal of the season to ruin Sassuolo's hopes of a league double over the champions.
The win - against the last team to beat them in Serie A - strengthens Juve's pursuit of a fifth straight title.
Second-placed Napoli travel to Palermo on Sunday.