The reigning Serie A champions passed up several opportunities to kill the game off but had to scrape to a 1-0 win and the coach feels they must improve their finishing
Juventus coach Massimiliano Allegri warned his side that they must improve their finishing after starting the season with a 1-0 win at Chievo.
The reigning champions began their title defence by extending their winning streak in the league from last season to eight, but the margin of victory should have been greater.
Juve were well into their 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 but Juve were lucky not to surrender the lead when Maxi Lopez forced a sprawling save from Gianluigi Buffon.
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."