Paulo Dybala scored twice as Juventus dominated their Champions League quarter-final tie with Barcelona.
Dybala was able to score his two goals before the break, setting the momentum for Juve which left Barca unable to catch up.
Giorgio Chiellini steered home a header from a corner, ending the scoreline.
Recent games have showed us that Barca’s defensive weaknesses, as they were in losing 4-0 to Paris St-Germain in the first leg of their last-16 tie – must come back from a heavy away defeat to progress.
However, after their record-breaking achievement to overturn that deficit against PSG, they will retain hope heading into the return leg at the Nou Camp on 19 April.
The win means Juve, who have won their last 32 Serie A home games, are now undefeated in 18 European games in Turin.
With the second-best defence of any side in Europe’s top-five leagues and having gone 441 Champions League minutes without conceding, the Italians are well-equipped to avoid wilting under second-leg pressure in Spain.
What the managers said:
Juventus coach Massimiliano Allegri: “I want to congratulate the lads because, as a team, they did great.
“It isn’t easy overcoming a team like Barcelona, but we also dug deep to keep a clean sheet. That was fundamental for us.
“But we have to remain humble, keep our heads down and keep working. PSG scored four, and look what happened.
“In Barcelona, it will be different and we have to try and score a goal.”
Barcelona coach Luis Enrique: “We basically gifted two goals to Juventus in the opening half. As coach, for me it’s inexplicable how they were so much better than us.
“It’s like a nightmare. We’ve had very little luck of late, and now I can only hope that from tomorrow we get back on our feet.
“In the first half the players were determined, but we made the same mistakes from Paris, and that’s a problem. Our second half was much better. But I still have the opening half in my head, like a nightmare.
“Maybe it wasn’t [a repeat of] Paris, but it was like the third half from Paris.
“I’m an optimistic person. But I take responsibility for this. I’m the coach and the buck stops at me.
“If we play as well as we can, we can score fourgoals against anyone.”
Dybala (7′ minutes, 22′ minutes)
Chiellini (55′ minutes)