Napoli lean heavily on the Juve defence but in the blink of an eye, the hosts blaze downfield on a counter. Ronaldo once more is released into the box - and Albiol executes a wonderful slide tackle to sweep the ball away from him.
90'
Ronaldo meets a cross into the box this time and still can't find the target for Juve. Five added minutes are on the way after that earlier fracas.
89'
Allan goes down to a clumsy challenge 25 yards out from the Juve goal and Insigne has a set-piece chance. He can't steer it over the wall though, and the hosts push back to halfway at pace.
87'
Ronaldo has the ball in the net! But he's offside, much to his disbelief. Replays show he was clearly a foot in front of defenders.
85'
Alex Sandro gets yellow.
Alex Sandro picks up a booking now after he taps the ankle of Albiol in a challenge that the Napoli man has a rather frenzied, belated reaction to.
84'
J. Cuadrado enters the game and replaces M. Mandžukić.
Juve make their final change, with Cuadrado on to replace Mandzukic.
83'
Another throughball, another Ronaldo run into the box - and this time, he squeezes his shot into the side-netting. There's a frustrated expression playing across his face as he wheels away.
81'
Ronaldo is almost through on goal again, beating the defenders to a Matuidi throughball - but he is a little too far ahead of them and is flagged for offside.
80'
There are 10 minutes and a little bit extra are left on the clock; are there anymore twists and turns in this game?
Minute
Description
78'
Ronaldo nearly does get on the scoresheet however, as he pops up one-on-one with Ospina. It's a wonderfully brave piece of keeping from the Napoli shotstopper though, as he cuts across the box to block the Juve striker's effort.
76'
L. Bonucci has scored a goal for Juventus! Assist by Cristiano Ronaldo.
He might not have got on the scoresheet today but Ronaldo has been at the heart of this Juve performance. He'll be popular in the dressing room after this is finished.
YES THEY CAN! BONUCCI FOR JUVENTUS! 3-1! That is very likely the ball game as the defender pokes in Ronaldo's low header, knocked towards the far post from the set-piece. The champions look like they will keep their perfect start to the Serie A season intact.
75'
Fabian concedes a corner now on the right wing and a handful of Juve players pop into the Napoli box. Can they smell a third here?
72'
Szczesny with the save! It's another cracking stop from the Juve keeper, as he comes off his line to block a 16-yard strike from Callejon in the middle of the box. Napoli can't seem to find a way through.
70'
Fabián Ruiz enters the game and replaces M. Hamšík.
Hamsik makes way for Fabian now, in Napoli's final change, as they wait for the set-piece to be taken. The visitors look to lift it over the defensive wall a moment later - and duly fail.
69'
João Cancelo gets yellow.
They've earned a stroke of fortune though; a set-piece chance on the left-edge of the Juve penalty area. Joao Cancelo gets a booking after he comes in and trip Koulibaly.
66'
So, after that flurry of action, Napoli - now a goal and a man down - need to steady themselves if they hope to get the better of Juve. They're struggling to remain even-keeled on an emotional level right now.
64'
F. Bernardeschi enters the game and replaces P. Dybala.
A couple of moments later, Juve make a second swap; Bernardeschi is brought on to replace Dybala following that earlier challenge.
62'
R. Bentancur enters the game and replaces E. Can.
As for Juventus, Bentancur arrives to replace Can.
61'
K. Malcuit enters the game and replaces P. Zieliński.
A. Milik enters the game and replaces D. Mertens.
...and Milik on for Mertens.
A spate of changes now following that bout of bad temper. Napoli make a double swap with Zielinski off for Malcuit...
60'
L. Bonucci gets yellow.
L. Insigne gets yellow.
The continuing to and fro between players also sees Bonucci get off rather lightly after what appeared to be a headbutt on Insigne. The referee shows him a yellow; it could have easily been a red.
Insigne also gets a yellow, for what looks like a first shove on Bonucci. Tempers have flared quite impressively at the Allianz Stadium.
58'
Mário Rui gets a second yellow card and is sent off.
Napoli are down to 10 men! A second yellow card for Mario Rui, who catches Dybala with a crunching challenge that leaves the Juve man down on the floor. Both sets of players come together in a fairly ugly mess and the referee shows Rui a second yellow to send him off.
55'
E. Hysaj gets yellow.
Hysaj comes crashing in on Alex Sandro in the Juve half now and gets a booking for his troubles.
54'
Zielinski and Koulibaly both threaten Szczesny now with tight efforts. The first takes a block and the second is hooked wide however, leaving Juve with a goal-kick.
52'
Insigne hooks a dangerous ball across the face of the Juve goal; Alex Sandro puts it out for a corner with some fine sliding defence.
51'
The visitors look to strike back immediately and Mario Rui forces Szczesny into a stop with an effort from 20 yards.
49'
M. Mandžukić has scored a goal for Juventus!
IT'S TWO FOR MANDZUKIC! 2-1! Juventus snatch the lead in the opening exchanges of the second half through a little bit of luck. Ronaldo launches a low shot towards the bottom-left corner from outside the box, and Ospina dives to stop it. The keeper lands a glove on the ball, only to push it into his own post, from where it deflects back out into an open box for the Croatia man to duly knock home. Cruel for Napoli; elation for Juve.
47'
Mertens embarks on a weaving solo run that takes him down to the edge of the Juve box, but he is closed out by a tight-knit pincer move that sees him lose possession.
46'
We're back underway at the Allianz Stadium - but will either side force the deadlock before full-time?
45' +1
HALF-TIME: JUVENTUS 1-1 NAPOLI
45'
There will be one added minute of injury time.
44'
Juventus come again, with Dybala the man to lash an effort over from distance.
43'
Napoli head straight back down the other end on a swift counter-move and Mario Rui just pops a lofted shot from the left edge of the penalty area over the top-right corner of the crossbar.
42'
Joao Cancelo! His effort, steered towards the top of the goal from a Can pass, is saved by Ospina just before it can dip under the crossbar.
41'
The set-piece ghosts across the box and Hysaj sees it out for a corner.
40'
K. Koulibaly gets yellow.
Another Napoli foul, this time made by Koulibaly, gives Ronaldo a free-kick 30 or so yards out on the right wing. The defender is booked for his efforts too.
38'
Napoli lose possession close to the Juventus box and then Zielinski fouls Dybala to concede a free-kick.
36'
Albiol concedes a corner to Juventus but again, the hosts fail to make the most of a promising set-piece situation and Allan is able to clear.
35'
Pjanic comes in late on Mertens and the latter wins a free-kick from the foul. Ronaldo is sent galloping away down the left wing and slots a cross in; Ospina claims it, safe as houses under the effort.
30'
How did Juventus not find the net there?! An absolute scramble takes place on the Napoli goal-line and nobody is able to smuggle the excellent delivery from Ronaldo in past Ospina. The hosts eventually win a corner, yet they cannot turn that into a clear chance either and the visitors survive.
28'
Juve will have a great chance to get a second on the board here as they are awarded a free-kick on the left corner of the Napoli box. The home fans think it should have been a penalty for the foul by Allan on Ronaldo, but instead, the Portuguese will take the set-piece from a shade under 20 yards out.
26'
M. Mandžukić has scored a goal for Juventus! Assist by Cristiano Ronaldo.
That's the kind of inch-perfect assist Ronaldo can bring to any team he plays in. A deft bit of footwork to fool the defenders and then a lovely pass to cap it all off.
MANDZUKIC LEVELS FOR JUVENTUS! 1-1! It's a peach of a cross from Ronaldo out on the left of the box, after he sends the defender the wrong way - and the Croatia striker leaps up to nestle a wonderful header low past Ospina. All square again, inside half-an-hour.
24'
Mário Rui gets yellow.
Mario Rui comes in hard on Pjanic and is booked for the foul, with Juve awarded a free-kick.
22'
Hysaj puts his body on the line to see out a dangerous throughball that Matuidi chases close to the line. Goal-kick to Napoli.
19'
Hamsik wins a free-kick for Napoli inside his own half following some dangerous play from Matuidi.
17'
Juventus win a corner, though Ospina is alert to the set-piece swung his way and deals with it well. The hosts have turned up the heat since going behind.
15'
Chiellini leathers a second effort towards goal a moment later for Juve, only to skewer it rather wide to the right.
14'
Ronaldo curls an effort in from just outside the right edge of the box, but Ospina's hands are steady to meet it.
12'
How Juve respond to going a goal down will be a real test now. They have more than enough star quality to pull this one back but Napoli will be floating on cloud nine with that score.
10'
D. Mertens has scored a goal for Napoli! Assist by José Callejón.
Callejon's assist was a lovely pass there. He could have gone for goal himself but his unselfish decision has helped his side take the advantage.
MERTENS GIVES NAPOLI THE LEAD! 1-0! It's a dream start for the visitors as they go a goal up inside the opening 15 minutes. A lovely throughball is served up on a platter for Callejon on the right of the Juve box, and he squares across to his teammate to clip in behind Szczesny at the left post.
9'
Ronaldo! The ex-Real Madrid man launches a towering show that Ospina does well to deflect, headed for the top left corner. Better from the hosts.
8'
The early momentum is with Napoli, but Juve snake their way downfield and apply some pressure now through Mandzukic and Ronaldo.
6'
Off the post from Zielinski! The Napoli man hits the right side of the woodwork with a low, left-footed effort that beats Szczesny. There was a matter of inches in that shot.
4'
Both teams exchange passes in midfield as they look to test the other out. Chiellini seeks Ronaldo with a long pass but it falls short to Koulibaly instead.
2'
Zielinski leads the first attack for the visitors and looks to ship a cross in from the left wing. It takes a deflection off Bonucci and Juve are happy to clear it away from their box.
1'
We are underway in this Serie A clash between Juventus and Napoli!
Hello and welcome to live coverage of the 2018-19 Serie A season as Juventus host Napoli at the Allianz Stadium in a mouthwatering first-versus-second encounter.
The pair finished as victors and runners-up respectively last term and have repeated the dynamic so far this campaign; the hosts sit undefeated at the top of the table with their visitors a win beneath them. Both will be desperate for three vital points that could shape the title race in the months to come – but who will come up with the goods today?
Subs: Kevin Malcuit, Sebastiano Luperto, Fabian Ruiz, Marko Rog, Adam Ounas, Nikola Maksimovic, Amadou Diawara, Arkadiusz Milik, Orestis Karnezis, Alessandro D'Andrea, Simone Verdi.
NAPOLI (4-4-2): David Ospina; Raul Albiol, Kalidou Koulibaly, Mario Rui, Elseid Hysaj; Marek Hamsik, Jose Callejon, Allan, Piotr Zielinski; Dries Mertens, Lorenzo Insigne.
Subs: Medhi Benatia, Federico Bernardeschi, Moise Kean, Daniele Rugani, Andrea Barzagli, Rodrigo Bentancur, Mattia Perin, Juan Cuadrado, Carlo Pinsoglio.
JUVENTUS (4-3-1-2): Wojciech Szczesny; Alex Sandro, Joao Cancelo, Giorgio Chiellini, Leonardo Bonucci; Blaise Matuidi, Miralem Pjanic, Emre Can; Paulo Dybala; Mario Mandzukic, Cristiano Ronaldo.
Team news now...
The teams are emerging at the Allianz Stadium and we are moments away from kick-off.
It's all square at the break at the Allianz Stadium in what has been an engrossing top-two battle. Dries Mertens gave the visitors an early lead but their hosts responded in fashion, with Mario Mandzukic finding the equaliser. It's all still to play for in this Serie A game; at half-time, it's Juventus 1-1 Napoli.
Both coaches will likely be happy with those showings but it is Juve who have the advantage on the ball. Napoli will need to pry their hosts away from their own half if they want to make a success of the second half.
Domestic campaigns must wait for both teams now; it's the Champions League next up for these two. Both enjoy home ties over consecutive nights next week; Juventus will host Young Boys on October 2 while Napoli entertain Liverpool the day after. Until then, thank you for joining us - and have a good weekend!
It's the hosts who take the three points at the Allianz Stadium - and with it, extend their lead to six at the top of Serie A. Juventus run out as eventual comfortable winners against a spirited 10-man Napoli side, with a double for Mario Mandzukic key to delivering in Turin. At full-time, it finishes Juventus 3-1 Napoli.
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