Lorenzo Insigne goes down while trying to control the ball in the air under pressure from a high Mattia de Sciglio foot. He wanted a penalty but after seeing a replay, De Sciglio's foot wasn't that high really.

Marek Hamsik has another shot blocked. There's plenty of action at both ends but Napoli haven't had many good chances yet.

Gonzalo Higuain has scored five goals in his last five games against Napoli.

Image source, Getty Images

Douglas Costa now curls an effort at Pepe Reina. This really is end to end. This could be a high-scoring game, the live text commentator wrote while jinxing everything.

Juventus defender Giorgio Chiellini was booked somewhere for some reason in the chaos.

The corner comes in and Mehdi Benatia blazes over the bar.

There were some arguments following the corner and Gonzalo Higuain was possibly close to being booked for dissent.

Now we're back at the other end and Elseid Hysaj's effort is blocked by Benatia.

Wasteful from Napoli. Marek Hamsik has the ball and the pitch opens out in front of him, he finds Jose Callejon but his cross is cleared by Mehdi Benatia.

Seconds later, Juve counter and Gonzalo Higuain's cross is put out for a corner.

Lorenzo Insigne curls a shot over. It was one of those efforts that's a bit of everything but also nothing really.

And now Marek Hamsik goes closer, his 20-yard strike is punched away by Gianluigi Buffon.

This is better from the hosts.

This is a huge test for Napoli - who haven't lost in Serie A all season. If Juventus win this, they will suddenly only be one point behind Maurizio Sarri's side.

Gianluigi Buffon comes out of his box and then decides he'd prefer to pick the ball up so he lets it go past him into the area before diving back onto it under pressure from a home player. Maverick.

Gonzalo Higuain loses the ball to Allan. The home crowd cheer. Allan loses it back to Higuain. Not so much noise.

The game has just started to settle down a bit after a fairly manic start. Juventus are passing the ball around the back at the moment.

Miralem Pjanic is caught daydreaming by Allan, whose pass is just too far ahead of Marek Hamsik. If he's got that pass right, Hamsik would have been in.

And now Juve's first chance - and it's a good one. Douglas Costa slips in Gonzalo Higuain, whose chipped shot is saved by the body of Pepe Reina.

Napoli are straight on the attack as Dries Mertens finds Marek Hamsik, but his 18-yard shot hits a defender. Electric atmosphere at San Paolo.

The biggest game in Serie A this season. We are under way.

Marek Hamsik is only one goal off equalling Diego Maradona's goalscoring record for the club. But that has also been true for each of the previous 10 games going back over two months.

Hamsik has scored 114 goals in 473 games over a decade - but only once this season. Maradona needed only 259 to score his 115.

Image source, Reuters

We have a proper title race on our hands this season in Italy. Napoli are only two points above Inter Milan, who host Chievo on Sunday.

Juventus and Roma are another two points back. Even Lazio, with a game in hand, are still just about in contention.

Image source, .

Image source, EPA

Fourth-placed Roma beat SPAL 3-1 earlier this evening, thanks to goals from Edin Dzeko, Kevin Strootman and Lorenzo Pellegrini.

Federico Viviani scored a consolation for SPAL, who played 81 minutes with 10 men after Felipe's red card, his 11th in Serie A since 2006-07.

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Napoli make two changes from the side who beat Udinese 1-0. Raul Albiol and Mario Rui come in at the back - with Christian Maggio and Vlad Chiriches making way.

Only five of Juventus' starting line-up from the 3-0 win against Crotone keep their places. Gonzalo Higuain - who had surgery on his hand this week - starts against his old club, with Giorgio Chiellini, Miralem Pjanic, Sami Khedira, Kwadwo Asamoah and Mattia de Sciglio also in.

Napoli: Reina, Hysaj, Albiol, Koulibaly, Mario Rui, Allan, Jorginho, Hamsik, Callejon, Mertens, Insigne.

Juventus: Buffon, De Sciglio, Benatia, Chiellini, Asamoah, Khedira, Pjanic, Matuidi, Douglas Costa, Dybala; Higuain

Image source, Getty Images

In their 91 years, Napoli have never won a Serie A title without Diego Maradona in their side.

Their golden era - which saw them win the Italian league twice (1987 and 1990) and the Uefa Cup (1989) - coincided with Maradona's seven years in Naples.

But this could be the year that changes everything. Maurizio Sarri's side have been sensational this season, winning 12 and drawing two of their opening 14 Serie A games.

We might have a better idea tonight of whether they are the real deal or not. Why? Their opponents are Juventus - who have won the last SIX Italian championships.