Juventus were clinical on the counter-attack with goals from Alvaro Morata and Juan Cuadrado, for the rest of the game holding out under a Bologna siege.
The Bianconeri were missing Paulo Dybala, Federico Chiesa, Danilo, Aaron Ramsey and Giorgio Chiellini, so Moise Kean got a rare start. Jerdy Schouten was injured for the hosts, who had Marko Arnautovic back.
It was very foggy at the Stadio Dall’Ara, but not enough to prompt a postponement.
Juventus broke the deadlock early, as Alvaro Morata exchanged passes with Federico Bernardeschi, including an Arthur Theate nutmeg, for the Spaniard to fire in at the near post.
Arnautovic’s header was smothered, while Mattias Svanberg skimmed the woodwork with a spectacular overhead kick.
Svanberg smashed another effort straight at Wojciech Szczesny, while defensive bodies were flung in the way of Arnautovic and the Svanberg follow-up, as Juve were increasingly pinned back into their own half.
Leonardo Bonucci made a decisive clearance just as Musa Barrow was pulling the trigger and Luca Pellegrini went off with a muscular problem.
Szczesny had his gloves stung by Nico Dominguez at the near post after a splendid Roberto Soriano slide-rule pass.
However, after 25 minutes of being pinned back into their own half and often their own final third, Juventus doubled their lead entirely against the run of play. Cuadrado unleashed a ferocious strike from just inside the area, it took a decisive deflection off Aaron Hickey to fly into the far top corner.
Juve went on the counter again, Bernardeschi’s angled drive fingertipped round the post, as Bologna realised they’d failed to make anything of their territorial dominance. In fact, Cuadrado could’ve had another on the Kaio Jorge assist in the final minute, scuffing his finish, and Skorupski denied Dejan Kulusevski.
Bologna 0-2 Juventus
Morata 6 (J), Cuadrado 68 (J)