Cristiano Ronaldo's double got Juventus back to winning ways in Serie A, but the Bianconeri needed a major helping hand from the video ref.
Juventus 2-1 Sampdoria: as it happened
FT! Sampdoria thought they had grabbed a dramatic equaliser when Riccardo Saponara curled in a sumptous stoppage-time effort, only for the video ref to ensure Juventus get back to winning ways and provisionally move 12 points clear at the top of Serie A, with Napoli still to play. Cristiano Ronaldo's double moves Juve onto what is a record points tally after 19 games of a 20-team Italian top-flight championship - 53 - and means the league leaders finish 2018 with a calendar-year haul of 100 goals. In between Ronaldo's strikes, Fabio Quagliarella had levelled for Samp from 12 yards, in the process becoming the first man since 2005 to net in nine straight Serie A games. The visitors gave as good as they got for much of today's clash and, while the decision to disallow Saponara's goal for offside does seem to have been the right one, Samp will feel very hard done by at VAR's harsh rubber-stamping of the supposed Alex Ferrari handball that led to Ronaldo's winner from the penalty spot.
96' That is a let-off for Juve, who looked set for a second successive 2-2 draw.
94' ...and the goal is ruled out! Saponara is adjudged to have been coming back from an offisde position when he received the ball from Defrel! It looks like it was the right decision, to be fair.
94' But wait... the ref is going to have another look at the goal!
Oh my word! Equaliser for Sampdoria! 2-2! Perin plays a poor clearance straight to a blue shirt, and when the ball is finally worked to Saponara on the right-hand corner of the box, he curls a delicious effort into the far top corner!
90' Perin ends up in a heap after coming out to claim Quagliarella's deflected shot and colliding with Defrel. Free-kick for Juve. Six minutes will be added on in Turin.
87' Can carves out a yard of space to shoot from just outside of the box, but blazes it high, wide and handsome. As it stands, Juventus are heading 12 points clear at the top of Serie A, with second-placed Napoli still to play Bologna this evening.
84' Saponara feeds Quagliarella, who clearly feels anything he tries will find the back of the net right now. He takes one touch before turning and slapping in an effort towards Perin's left-hand corner from range, but it's never going to trouble the Juventus keeper.
81' Both sides make another change. Matuidi is off for Douglas Costa for Juve, while Samp bring off Ekdal for Jakub Jankto.
80' Ronaldo fires one at Audero... but the Samp keeper gathers!
77' Quagliarella hurls himself boot-first at Praet's right-wing ball into the box, and isn't a million miles away from turning it into the net! If Sampdoria are to grab a point here, they're going to have to be the first away side to score two in a league game at the Allianz Stadium since Lazio back in October 2017.
75' Chance for Dybala! Chiellini pings a lovely ball over the top to find Sandro on the left-hand byline. The Brazilian plays it into the box, where it misses everyone and falls to the Argentine, who pulls his effort wide of the near post! That could well have been 3-1.
If it stays this way, Juventus will set a new points record after 19 games of the Serie A season, surpassing their own mark of 52 by one.
70' Samp win a free-kick after Rugani fouls Linetty - the defender earning himself a yellow card for his troubles - but the delivery into the box is comfortably cleared. The visitors then make a second change, Riccardo Saponara replacing Ramírez.
69' Juventus make their first sub: Federico Bernardeschi is on for Mandzukic.
67' Uff! Quagliarella chests down a back-post cross and thumps the bouncing ball just over on the turn!
That's Ronaldo on 14 league goals, then. Now the top scorer in Serie A.
66' Sampdoria make the first change of the afternoon, with Caprari coming off for Gregoire Defrel.
63' ...and the penalty stands! I think the ref was not only looking at the handball - one that is harsh in the extreme on Samp - but also a possible Sandro push at the near post. Anyway, Ronaldo takes... and thumps his kick down the middle and into the net! Just like Quagliarella's.
62' Penalty to Juve! The hosts' recent pressure continues, and after one corner becomes two, Pjanic's delivery appears to hit Ferrari on the arm. Ronaldo to take... Hold on, though, the referee is to take another look at it.
60' Another chance for Ronaldo! In comes the cross, and the former Real Madrid man's header is directed goalwards... only for Colley to deflect it over!
59' Ronaldo hits the woodwork! The Portuguese thrashes a thunderous strike towards Audero's left-hand corner, but the Sampdoria goalkeeper tips the effort onto the post! Juventus are stepping it up now.
56' Again Matuidi goes close! Ronaldo feeds the overlapping Sandro, who fizzes in a cross onto the Frenchman's head - but he glances wide from six-yards out! Mandzukic is following up at the far post, but can't get his toe onto it.
55' Mandzukic gets to the right-hand byline and pings in an enticing cutback to the arriving Dybala... but the Argentine can't get hold of it, and the chance is lost.
51' That's a really good save from Audero! Matuidi arrows a low shot towards the corner from the edge of the box, and the Samp custodian gets a strong to it and pushes it away!
47' Forward come Sampdoria, and Caprari tests Perin - but the Juventus keeper deals with it.
47' No changes for either side at half time, by the way.
Peep! Back underway at the Allianz Stadium.
Peep peep peeeeeep! That's half time in Turin, where Cristiano Ronaldo gave the hosts the perfect start with a second-minute opener, only for Sampdoria to get over that early setback and show exactly why they've collected 14 points from a possible 18 over the past month. They dusted themselves down and came right back into what has been a close-fought contest, and were good value for their equaliser from the spot, scored by Juve old boy Fabio Quagliarella.
47' No. Chiellini heads just wide.
46' Juventus win a free-kick that Pjanic will deliver from the right. Can the hosts grab a late goal before the break?
45' Three minutes of time added on in Turin.
42' Just as I write that, Dybala cuts inside and thumps a shot at Audero that the Sampdoria keeper does well to beat out, before Ronaldo's back-post cross from the left almost finds Mandzukic's outstretched leg. It's been a very decent contest so far.
40' Quagliarella picks the ball up and runs at the Juve backline, before seeing his attempt to feed Caprari go awry. Still, the guests are full of confidence here. Shortly afterwards, Ramírez almost gets Quagliarella in, but Rugani cuts out. Juve have gone right off the boil.
37' There's a chance for a second for Samp! Ramírez flights in yet another free-kick in swing-it-into-the-box territory, and Ferrari turns it goalwards from point-blank range - but Perin holds on!
34' Samp win a free-kick in a threatening position on the right; it comes to nought, but the visitors are well on top right now, and immediately earn themselves another dangerous dead-ball opportunity, at the cost of a yellow card for Matuidi. When the ball is played into the box, however, Ferrari promplyl follows the Frenchman into the book for a high challenge on Sandro, and the chance is lost.
That spot-kick moves Quagliarella on to 12 league goals this term, by the way. Just one off the top of the goalscoring charts.
32' Former Juve man Quagliarella steps up... and thumps the penalty in! Straight down the middle! All square at the Allianz Stadium!
Ooh, this is interesting. Replays suggest that the Ekdal header hit Can's arm on its way towards Sandro's bonce. Referee Paolo Valeri trots over to the touchline to have a look.... and awards a penalty! Juventus are not happy.
29' Samp win a corner, which Sandro has to be alert to clear off the line! It was Ekdal with the header for the visitors.
26' Matuidi is down and in need of treatment for an as yet unspecified problem, but after a few dabs of the magic sponge appears to be OK to continue.
23' Not far at all from a second for Juve! Chiellini strides forward to pick up a diagonal ball on the left-hand side of the Samp box, before laying off to Dybala on the edge of the area... but the Argentine's side-footed effort is a yard or so past Audero's post!
20' Ufff. Ferrari is a very lucky boy. The Sampdoria defender gets himself in a terrible tangle, treading on the ball and almost allowing Mandzukic to pick his pocket and run in on goal. However, he manages to keep hold of the ball - just - and survives. At the other end, Caprari thunders a bouncing ball towards goal, but sees his effort deflected out for a corner... which comes to zip.
18' There's a shooting chance for Samp... but Praet drags his shot wide! It really opened up for the midfielder on the edge of the box, and Perin will have been relieved to watch the ball trundle well past the post from what was a promising position.
13' Twice Ronaldo receives the ball in crossing space on the left. His first ball finds Pjanic for a Scholes-esque volley from the edge of the box, before the second is dealt with with relative comfort.
8' A first moment of danger for Sampdoria as the visitors earn a free-kick in prime swing-it-into-the-mixer territory. Gastón Ramírez stands over it... but the Juve backline deal with it.
By the way, that early Ronaldo strike moves him on to 13 league goals this season, drawing the former Real Madrid level with Genoa's Krzysztof Piatek at the top of the Serie A goal charts.
Ronnie receives the ball on the left-hand corner of the box, gets it out of his feet and fires it across Audero and into the far corner! What a start!
2' Goooal! Ronaldo! That did not take long.
Peeep! We are underway!
The teams are out in Turin! By the way, should you be scratching your head at this late stage about you can take in this game, we have a useful guide on how and where to watch.
Sampdoria make two changes to the side that beat Chievo, with defender Alex Ferrari and forward Gastón Ramírez in for Joachim Andersen and Riccardo Saponara, respectively.
Getting back to the team news, Juve boss Massimiliano Allegri makes four changes to the side that drew at Atalanta: Daniele Rugani replaces Leonardo Bonucci in defence, Miralem Pjanic and Blaise Matuidi come into the midfield for Sami Khedira and the suspended Rodrigo Bentancur, and Ronaldo returns up top with Douglas Costa making way.
Meanwhile, Juventus will set a record Serie A points total after 19 matches if they beat Sampdoria today. Their haul of 53 would surpass the 52 that they themselves managed at this stage of the season in 2005/06 and 2013/14.
The visitors saw off Chievo 2-0 in Genoa to make it three league wins on the trot, thanks to goals by Fabio Quagliarella - once of Juventus - and Gastón Ramírez, a result that leaves Marco Giampaolo's men fifth, just two points behind Lazio in fourth.
With second-placed Napoli losing at Inter in midweek - in a match marred by a fan death and apparent racial abuse of visiting defender Kalidou Koulibaly by the home supporters - Juve actually face Samp today having increased their advantage at the top to nine points.
Leaders Juventus come into this clash still unbeaten in Serie A after Cristiano Ronaldo came off the bench to salvage a 2-2 draw against Atalanta on Wednesday, while Sampdoria arrive in Turin in fine fettle, having won four and drawn two of their last six to sit just outside the Champions League places.
The teams are in, so let's dive straight into that, starting with the hosts.
Hello and welcome to our live coverage of Juventus and Sampdoria's Serie A week 19 clash at the Allianz Stadium. We'll be building up to kick-off in half an hour's time, before bringing you minute-by-minute updates on the action in Turin.
Juventus vs Sampdoria: Serie A match preview
Runaway leaders Juventus are out to get back to winning ways in Serie A as they host high-flying Sampdoria at the Allianz Stadium this lunchtime (12:30 CET).
Cristiano Ronaldo came off the bench to fire a late equaliser as Juve were held 2-2 by Atalanta on Wednesday, although second-placed Napoli's defeat at Inter Milan meant the Bianconeri actually stretched their advantage at the top to nine points.
Ronaldo and Miralem Pjanic, who was also a second-half substitute in Bergamo, now return to Massimiliano Allegri's line-up as the Italian champions host an in-form Sampdoria in the final round of Serie A matches in 2018.
Goals by Fabio Quagliarella and Gastón Ramírez saw Samp beat Chievo 2-0 on Wednesday, making it four wins and two draws from their last six in the league - and leaving them just two points shy of the Champions League places.
However, Marco Giampaolo's men now face a club who have won out in eight of the sides' last 10 Serie A meetings, most recently a 3-0 thumping in Turin in April.