The referee adds just a minute of stoppage time onto the 90 minutes.
88'
J. Paintsil gets yellow.
Paintsil is shown a yellow card after inadvertently catching Mertens in the face during an aerial duel.
Hagi attempts an audacious shot from a tight angle with the set-piece and it whips past the wall and just past the side netting at the near post as Meret nervously scrambled to get across.
87'
K. Koulibaly gets yellow.
Koulibaly is booked for a mistimed lunge on Bongonda, offering Genk another opportunity to swing a free-kick into the box from a promising position.
85'
Napoli are slowing the game down and rolling it gently around in their own half when they get the opportunity now: after establishing a four-goal lead they're happily conserving their energy.
83'
Manolas gifts possession to Paintsil in a dangerous area and the winger slides a pass through to Hagi who hits a wayward effort from 25 yards that trickles well wide.
82'
Neto Borges enters the game and replaces C. De Norre.
De Norre comes off for Borges in defence.
80'
Mário Rui gets yellow.
Mario Rui drags Paintsil down inside the Napoli half and earns himself a yellow card.
79'
Fernando Llorente enters the game and replaces José Callejón.
Callejon makes way for Llorente up top.
78'
H. Lozano enters the game and replaces A. Milik.
Milik is replaced by Lozano after a tremendous hat-trick that put Napoli on the path to a crucial three points.
Minute
Description
74'
Penalty goal scored by D. Mertens for Napoli!
C. De Norre gets yellow.
MERTENS SCORES THE PENALTY! 4-0! The attacker steps up confidently, before dinking a wonderful panenka down the middle that sends Vandevoordt the wrong way!
De Norre is shown a yellow card for his handball.
72'
G. Gaetano enters the game and replaces P. Zieliński.
I. Hagi enters the game and replaces J. Ito.
Napoli take this pressure-free opportunity to replace Zielinski with the 19-year-old Gaetano.
Ito comes off after a lively performance for Hagi.
69'
Koulibaly confident dribbles it out of the back four, and - with little pressure on the ball - he opts to race with it into the Genk half, where he beats two men and attempts to carry on into the box before Maehle just about manages to rescue the situation by shuffling across to dispossess the defender.
65'
Onuachu beats Manolas to a loose ball in the box, before attempting a selfless lay-off to Bongonda, but unfortunately, he overhits his pass and Koulibaly clears.
63'
T. Bongonda enters the game and replaces M. Samatta.
Samatta is replaced by Bongonda after his exciting first half performance fell away after the interval.
61'
The second 45 has been a much slower affair than the first period so far. Napoli look content to exert as little energy as possible knowing that they've built the lead they need, whereas Genk simply look demoralised after their unfortunate first half.
59'
Callejon makes a smart run into the box that Allan picks out beautifully with deft chip, however, Vandevoordt anticipates the danger and rushes out to punch it away to safety.
57'
Mertens shimmies towards the edge of the box before attempting a fierce shot that Lucumi bravely blocks away from danger.
55'
Hrosovsky attempts a curling effort from 25 yards, but it's straight at Meret and Napoli play it out from the back once more.
53'
Ito's had the better of Mario Rui so far today, but on this occasion the winger attempts to slalom past the full-back only to get brushed aside as Rui confidently steps in to let the ball run out of play.
51'
Callejon and Ruiz play an elegant one-two that almost releases the former into the box, but Dewaest scurries across to intercept the pass and clear.
49'
Genk put together a fluent move that ends with Paintsil cutting a pass back to Berge on the edge of the area, where the midfielder hits a tame shot straight at Meret.
46'
Napoli get the second half underway.
45' +2
HALF TIME: Napoli 3-0 Genk
45'
The referee indicates one minute of stoppage time.
40'
The scoreline doesn't reflect Genk's exciting work going forward, but Napoli will be thrilled that they've professionally taken a commanding lead and all but ensured a place in the next round of the Champions League.
38'
Penalty goal scored by A. Milik for Napoli!
MILIK SLOTS THE PENALTY HOME! 3-0 TO NAPOLI! Milik steps up and completes his hat-trick, by rifling an assured spot-kick right into the bottom left corner!
36'
M. Vandevoordt gets yellow.
Napoli win their fourth corner, but this time Callejon's cross is cleared at the first attempt by Lucumi and the hosts are forced to build again.
Vandevoordt is shown a yellow card for giving away the penalty with his clumsy challenge on Callejon.
34'
Ito zooms past Mario Rui and gets to the byline before squaring a low cross into the box, but Meret does brilliantly to dart off his line and fend off the threatening delivery.
32'
Ancelotti will be pleased with how his side have built their lead amidst the rumours of his departure before kick off. It would have been easy to lose focus prior to the game, but the hosts have capitalised on their opportunities and taken charge of this fixture.
30'
Napoli counter-attack quickly and create a dangerous three-on-three, allowing Zielinski to race down the left flank before cutting it back to Ruiz who has a shot brilliantly blocked on the edge of the area.
28'
Koulibaly manages to win the header from another corner, but this time his powerful effort floats well over the bar.
26'
A. Milik has scored a goal for Napoli! Assist by G. Di Lorenzo.
Di Lorenzo's been one of Napoli's most exciting outlets in the first half and he capitalises on space down the right to get in behind again and slide in an ideal cross for Milik to finish.
MILIK GETS A SECOND! 2-0 NAPOLI! Di Lorenzo latches onto Ruiz's superbly clipped pass over the top, before drilling a low cross into the six-yard box, where it's met by Milik ahead of Dewaest, who proceeds to knock the ball firmly into the bottom corner from close range!
24'
Genk win back possession and have a chance to break away, but Paintsil's throughball is overly ambitious and the hosts recover the ball.
22'
The hosts enjoy a long spell of possession as they try and gain control over the flow of the game. The move culminates with Lucumi clearing it away for a corner, but the set-piece amounts to nothing.
20'
Insigne attempts a long switch out towards Mertens but it sails over his head an out of play. Despite their lead, Napoli have looked edgy so far with the frustration of their winless run hanging over them.
18'
Di Lorenzo bustles his way to the byline before chipping in a cross towards Milik. However, the striker can't control his header and it bounces wide of the near post.
12'
Mertens wriggles towards the edge of the box before attempting an audacious chip over Vandevoordt, but he miscues it slightly and the effort drifts well over the bar.
9'
Kouilbaly hits a speculative shot from outside the box that drifts comfortably wide.
7'
Genk carefully construct a passing move as they attempt to settle into this game and it culminates with Samatta standing up a cross to the back post, where Di Lorenzo smartly blocks Paintsil's header away from goal.
5'
You have to feel for Vandevoordt in goal: this is his Champions League debut and within five minutes he's made a truly costly error.
3'
A. Milik has scored a goal for Napoli!
NAPOLI TAKE THE LEAD! 1-0! It's an incredibly unfortunate start for 17-year-old goalkeeper Vandevoordt, who takes a heavy touch from a backpass, before dithering and allowing Milik to speed in and rob him of possession before slotting it into an empty net!
2'
Napoli start brightly and Milik almost gets free inside the box immediately, but his touch is a little heavy and Zielinski's neat flick goes to waste.
1'
Genk get the first half underway.
Hello and welcome to live commentary of this Champions League Group E fixture between Napoli and Genk. While the away side can no longer escape a fourth-place finish at the foot of the table, for Napoli this is a critical game for their European aspirations, after devastatingly falling short of the knockout rounds last campaign. Prior to kick off, the hosts find themselves narrowly qualifying for the last 16: they’re second in the group – one point behind Liverpool and two ahead of Salzburg. To qualify they must avoid defeat or hope that Salzburg fail to beat Liverpool.
NAPOLI (4-4-2): Alex Meret; Giovanni Di Lorenzo, Kalidou Koulibaly, Kostas Manolas, Mario Rui; Jose Callejon, Allan, Fabian Ruiz, Piotr Zielinksi; Dries Mertens, Arkadiusz Milik.
SUBS: Hirving Lozano, Lorenzo Insigne, Sebastiano Luperto, Fernando Llorente, Eljif Elmas, David Ospina, Gianluca Gaetano.
SUBS: Neto Borges, Ianis Hagi, Stephen Odey, Dries Wouters, Theo Bongonda, Gaetan Coucke, Dieumerci Ndongala.
GENK (4-3-3): Maarten Vandevoordt; Joakim Maehle, Sebastian Dewaest, Jhon Lucumi, Casper de Norree; Patrik Hrosovsky, Sander Berge, Junya Ito; Joseph Paintsil, Paul Onuachu, Mbwana Samatta.
The players are emerging from the tunnel and kick off is just seconds away!
Normally, you would expect this to be a routine win for Napoli, but recent form and speculation over the future of manager Carlo Ancelotti suggests this one might be trickier than anticipated. The hosts have failed to win any of their last nine games and would dearly love to arrest this slump today.
Napoli will still need to be wary of Genk's threat going forward in the second period, however, it'll take something special from the away side to prevent the hosts from progressing to the last 16.
Napoli's victory - in conjunction with Liverpool's win away at Salzburg - means that the hosts finish second in Group E: they'll qualify for the knockout round, albeit with a lower seeding. Genk, meanwhile, finish fourth after a difficult, winless campaign.
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