Napoli kept their Serie A title hopes alive in the most dramatic fashion in Turin on Sunday, Kalidou Koulibaly powering home a match-winning header in stoppage time against Juventus to move his side within one point of the Bianconeri.
It looked as though Juve were going to preserve their four-point advantage at the summit with four games to play and edge closer to a seventh successive Scudetto only for Koulibaly to throw the race wide open.
Compounding Juve's last-gasp defeat is the fact Massimiliano Allegri's men arguably have the tougher run-in of the two sides, with the Derby d'Italia away to Inter coming up next Saturday, and a clash with Champions League semi-finalists Roma awaiting in the penultimate round of fixtures.
Napoli, meanwhile, seeking to win a first Scudetto since 1989-90, when they were inspired to a second title in four seasons by the great Diego Maradona, visit Fiorentina next weekend hopeful of seizing on any further slip-ups from the leaders.
Napoli enjoyed an early sight of goal when Lorenzo Insigne fired wide in the first minute, and the passage of play proved costly for Juventus, as Giorgio Chiellini sustained an injury that ultimately forced him off 10 minutes later, having failed to convince in his attempts to shake off what appeared to be a muscle problem.
With full-back Stephan Lichtsteiner introduced and Benedikt Howedes shifting to centre-back, Juve went close for the first time in the 17th minute, Miralem Pjanic's deflected free-kick wrongfooting Pepe Reina and striking the far post, leaving the Napoli goalkeeper stranded.
His counterpart Gianluigi Buffon had to be alert to tip over a dipping cross-cum-shot from Mario Rui, who then slid in Marek Hamsik for the best chance of the first half in the 24th minute, only for the Napoli captain to drag his attempt across the face of goal and wide.
Insigne had the ball in the back of the net seven minutes before half-time, but Lichtsteiner smartly stepped up to catch his opponent offside.
Allegri responded to his team's underwhelming first-half showing by withdrawing Paulo Dybala in favour of Juan Cuadrado, while Maurizio Sarri introduced the fit-again and in-form Arkadiusz Milik a minute past the hour mark, taking off the relatively ineffectual Dries Mertens.
Substitute Piotr Zielinski tested Buffon from long range with seven minutes to go in what had been a tense second half, and the goalkeeper also had to claw away an awkward Jose Callejon delivery.
From the Spaniard's subsequent corner, Napoli grabbed the all-important goal, Koulibaly rising above the Juve backline to head home a powerful winner, the final whistle sparking wild celebrations among the visitors and ensuring a thrilling conclusion to the title race.
18. Oktober 2018
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|Reavie leads CJ Cup, solid start from Koepka|
|Juventus kicked me out to sign Ronaldo – Higuain|
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|Manchester United´s Chelsea Blues and other one-sided rivalries|
|Babbel fears for Kovac´s Bayern future|
|Bradley homers again, Red Sox take 3-1 lead over Astros|
|Ayton, Doncic shine on NBA debuts|
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|MLS Review: Rooney stunner seals DC win, Sounders clinch play-off spot|
|Pochettino ´proud´ of Dier for Ramos tackle|
|Wallabies name three uncapped players for All Blacks clash|
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|Lloris: United´s Pogba unfairly judged because of transfer fee|
|´Phenomenon´ Mbappe deserves Ballon d´Or, says Buffon|
|Dodgers on cusp of World Series after beating Brewers|
|Mata braced for ´difficult month´ at Man United|
|WATCH: Rooney scores wonderful free-kick for DC United|
|Kaino handed five-week ban for striking Roberts|
|Bears star Khalil Mack ´day-to-day´ with ankle injury|
|Anthony has ´a clearer understanding´ of his role with Rockets|
|Brewers remove Miley after one batter against Dodgers|
|Rams rule out Kupp for 49ers game|
|Giants owner Mara to talk with Beckham Jr|
|Bamberg battle back to claim Champions League win|
|MLB investigated alleged Astros sign stealing, found no wrongdoing|
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|Red Sox´s Sale won´t start game five of ALCS|
|Tsitsipas and Shapovalov advance at Stockholm Open|
|Witsel to Dortmund is signing of the season - Martinez|
|Pique confident Nadal will play in 2019 Davis Cup|
17. Oktober 2018
|Seeds suffer in Moscow and Luxembourg|
|Johnstone grabs hat-trick as England ease past France|
|Pogba and Mourinho disagreement over Instagram video, confirms Pereira|
|Nuggets coach Malone signs contract extension|
|Mayweather accepts Khabib´s challenge: ´We´re fighting´|
|Slovenia sack Kavcic as head coach|
|Morgan and Rashid star as England win rain-reduced ODI in Sri Lanka|
|Romagnoli aims to make Gattuso proud in Milan derby|
|Naldo signs Schalke extension|
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|Barcelona know when captain Messi is angry – Abidal|
|Bertens loss hands Pliskova last WTA Finals berth|
|Liverpool star Mane undergoes hand surgery|
|F1 Raceweek: Happy hunting ground for title-chasing Hamilton - US GP in numbers|
|Canelo signs record-breaking DAZN deal|
|England hit by another Vunipola injury absence|
|Gruden: Oakland Raiders ´aren´t tanking´|
|Chiesa focused and happy at Fiorentina|
|We´ll see what´s possible - Henry not limiting Monaco´s ambitions|
|Wembley sale off after Khan offer withdrawn|
|Football needs people like Arsene - Pires keen for Wenger return|
|Abbas five-for torments woeful Australia as Pakistan take control|
|Henry: Wenger and Guardiola inspirations for my coaching career|
|Pires backs Henry and Vieira for Ligue 1 success|
|Bolt rejects Valletta offer|
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|NBA 2018-19: The LeBron James effect on teams he has joined|
|Svitolina qualifies for WTA Finals after Pliskova loses|
|Genoa will sell ´superstar´ Piatek, admits president|
|Moutinho targets European qualification with Wolves|
|Embiid: 76ers-Celtics isn´t a rivalry, they always kick our a**|
|Vinicius ´calm´ as he waits for Real Madrid chance|
|Nothing else to say - Ramos posts clip of supposed Sterling stamp|
|Chiellini joins Mind the Gap campaign to help players prepare for retirement|
|Injured Kusal Perera replaced by Kusal Mendis in Sri Lanka squad|
|Big names return for Scotland´s November Tests|