Juventus coach Massimiliano Allegri warned his side must improve its finishing after starting the season with a 1-0 win at Chievo.
The reigning champions began their title defense by continuing their winning streak in the league from last season with an eighth-straight win, but the margin of victory should have been greater.
Juve was well into its stride early on and went ahead after seven minutes when Martin Caceres headed a corner in via the unfortunate Cristiano Biraghi. Tevez struck the bar twice while Vidal saw an effort cleared off the line and were lucky not to surrender the lead when Maxi Lopez forced a sprawling save from Gianluigi Buffon.MORE: Alex Morgan upset at 159-degree temps | Transfer photos
Although Allegri was satisfied with Juve's performance in his first league game as coach, he warned that the goal return had to improve.
He told Sky Sport Italia: "More than angry I was a bit worried, because after wasting so many chances we risked an equaliser with the only Chievo chance and Buffon made a great save.
"The team played well, though we need to improve our finishing. At this moment the team is working hard, it was important to win the opener ahead of the international break."
Juve handed a debut to French midfielder Kingsley Coman after his close-season move from Paris Saint-Germain and he delivered an impressive performance that enthused Allegri.
"The kid Coman played like a veteran," he added. "He has great quality and character. He’s a young lad and we should let him grow, but he has real talent."