Cristiano Ronaldo's Juventus debut ended in a dramatic 3-2 victory at Chievo, though it was substitute Federico Bernardeschi who was the reigning Serie A champions' stoppage-time hero.
Despite leading through Sami Khedira's early strike, Mariusz Stepinski's first-half header and Emanuele Giaccherini's penalty after the break ensured Chievo led.
Mattia Bani's own goal levelled matters with 15 minutes to go and Mario Mandzukic thought he had won the game for Juventus only for VAR to disallow the goal, with Ronaldo having possibly handled and collided with goalkeeper Stefano Sorrentino in the build-up.
Yet Bernardeschi turned home Alex Sandro's cross in the 93rd minute to give Ronaldo and Juve a winning start.
Three minute into Ronaldo's bow Juve were 1-0 up, though it was another former Real Madrid man that got the goal.
Miralem Pjanic's free-kick was reached by Giorgio Chiellini at the back post and his header was latched on by Khedira, who swivelled and fired home a half volley.
Ronaldo missed the target with two openings and Chievo struck back prior to the break when Stepinski peeled off Leonardo Bonucci and headed in an equaliser.
Juve then fell behind when one of their former players converted a 56th-minute penalty. Joao Cancelo, another Juve debutant, dived in on Giaccherini to concede the penalty and the midfielder took the spot-kick himself to put Chievo ahead.
Trailing in the game seemed to galvanise Ronaldo and, after heading straight at Sorrentino, he unleashed a terrific effort from range that the Chievo keeper had to palm away.
Only a brilliant last-ditch intervention from Fabrizio Cacciatore then denied Ronaldo, but his side did level when Bani put into his own net when trying to deal with Juve's returning defender Bonucci at a neat-post corner.
A dramatic finish then unfolded as Juve were denied a Mandzukic goal that was initially awarded. Replays showed the ball struck the back of Ronaldo's arm before he collided with Sorrentino, who was laid out when the ball looped up for Mandzukic to head home.
But Juve did net a winner as Bernardeschi scored past substitute goalkeeper Andrea Seculin, much to Ronaldo's delight.
What does it mean: Ronaldo not up and running, but Juve show champions' mentality
Ronaldo had scored in each of his last 10 league appearances for Madrid, but that was not a sequence that was extended to Serie A. Dropping deep at times and showing frustrating at not receiving the ball on other occasions, it will take time for the 33-year-old to find his place in this Juve team. The most pleasing thing from the Bianconeri's point of view was that others stepped up and they found a way to win.
Pat on the back: Bernardeschi steals the limelight
Bernardeschi was called for immediately after Juve fell behind and having provided the corner from which they levelled, the winger was then in the right place at the right time to score the winner. In delivering when it mattered, he took a leaf straight out of Ronaldo's book.
Boot up the backside: Cancelo's debut to forget
Another of Juventus' new signings Cancelo will not remember his first appearance too fondly. The first goal Juve conceded came via a cross from his flank and he then dived in needlessly to concede the penalty which saw Chievo go 2-1 up.
Key Opta stats:
- Juventus conceded at least two goals in the first Serie A matchday for the first time since 1998.
- Cristiano Ronaldo fired his first shot on target after 47 minutes and 22 seconds.
- Four of Federico Bernardeschi's five Serie A goals with Juventus have been scored away from home.
Juventus face Lazio at home next, which means Ronaldo is set to play at the Allianz Stadium for the first time since he scored that overhead kick for Real Madrid in April. Chievo's tough start to the season continues away at Fiorentina.
|I hope from now on it only gets better - Floersch update on horror crash|
|Calf injury rules Ashton out of Australia match|
|Halfpenny to miss South Africa clash|
|Hard for Lazio to hold on to Milinkovic-Savic, says Lotito|
|Australia´s next generation pay tribute to retiring Cahill|
|Bairstow pushing hard for Test recall|
|Cane eyes 2019 Super Rugby return after neck break|
|Van Dijk finds time to console referee during Dutch delight|
|Cahill sheds tear at end of phenomenal Australia career|
|WATCH: Pelicans coach Gentry interviews himself|
|Where does Chiefs-Rams classic rank among NFL´s highest-scoring matches?|
|Australia 3 Lebanon 0: Boyle bags brace on Cahill farewell|
|Guendouzi underlines desire to represent France|
|I might need a couple of drinks to relax after that! - Rams coach McVay|
|Juventus´ Alex Sandro has Premier League ambition|
|Ederson taking goalkeeping to another level, says City hero Weaver|
|Ceferin dismisses "super league" plans as fiction|
|Rams defeat Chiefs in one of the highest scoring games in NFL history|
|Kemba Walker leads Hornets to win over Celtics|
|Gomez praises ´top player´ Van Dijk, Stones|
|Cricket Australia to maintain Smith, Warner ball tampering bans|
|Brazil´s Tite encouraged by Neymar captaincy|
|Holmes set for NFL switch after Cronulla release|
|Dier encourages English youngsters to follow Sancho´s lead|
|Southgate promises further changes to England squad|
|Jones sceptical over Pocock injury|
|Sane encouraged despite Germany´s ´annoying´ Nations League draw|
|Character got Netherlands through, says Koeman|
|Netherlands´ focus still on Euros - Van Dijk|
|Ireland will be ready for qualifiers, insists O´Neill|
|Smith undergoes successful surgery, Redskins sign Sanchez|
|Germany 2 Netherlands 2: Dramatic five-minute fightback seals Oranje progression|
|Denmark 0 Republic of Ireland 0: Thrills at a premium again in Aarhus|
|O´Brien could return for start of Six Nations|
|Cavani: Neymar and I are ´friends, brothers, team-mates´|
|Pothas named Windies interim head coach|
|LA Galaxy planning for Ibrahimovic stay|
|NFL will return to Mexico City in 2019|
|Broner vows to end Pacquiao´s career in Las Vegas|
|UEFA should punish PSG and Man City, says LaLiga chief|
|Teenage driver Floersch has ´no fear of paralysis´ after operation|
|Mancini bemoans Italy´s misfortune in front of goal|
|Sprint legend Johnson ´pretty much back to normal´ after stroke|
|Bournemouth defender Adam Smith out for three months|
|World champions France out to end 2018 on a high|
|I told him there´s no future in football! A-Rod relieved to be ignored by Mahomes|
|Dembele must focus and be more responsible - Suarez|
|Neymar could return one day – Barca chief|
|Cole backs West Ham to keep Arnautovic|
|Injury rules Bernardo Silva out of Poland clash|
|Lamar Jackson debut start ´spectacular´ - Ravens coach Harbaugh|
|Babar run out the turning point, laments Sarfraz|
|West Ham boost London Stadium capacity to 60,000|
|A great advertisement for Test cricket - Williamson revels in stunning win|
|Van Dijk one of the world´s best - Klaassen|
|Floersch had ´angel on her shoulder´ in horror crash|
|Gascoigne charged with sexual assault|
|I am going to stay at Chelsea and fight, insists Giroud|
|Hansen to make announcement on All Blacks future|
|I have reached the top by joining Chelsea - Sarri|
|Bonucci tells Italy boo boys to ´live with less envy´|
|Dramatic Pakistan collapse gives Stead first New Zealand Test win|
|Button enjoying racing for first time in years|
|Dortmund chief not planning Pulisic sale|
|Theismann: Smith leg break ´heart-wrenching´ to watch|
|Wolves defender Jonny suffers knee injury|
|Holmes to meet with Sharks amid NFL switch talk|
|LeBron made 51 points ´look easy´, says Walton|
|McGuire signs four-year deal with Cowboys|
|Bears beat Vikings to extend NFC North lead|