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81 min: Garnacho, with his new face tattoo, is already on, and wandering offside. Lukaku makes his bow, too.
80 min: Romelu Lukaku, in many ways the great lost Chelsea player, is due to come on for Napoli. It never quite happened for him at the club where he had idolised Didier Drogba.
79 min: Napoli have run short of ideas, with Chelsea sitting deep Hojlund and Vergara have no space in which to make their incursions.
77 min: Di Lorenzo is coming back on, with a heavy limp, it looks like. What a soldier, though his influence had waned before he got hurt.
76 min: Di Lorenzo is in tears, this looks a nasty one, compounding all those injury problems for Napoli. This gives Chelsea time to regroup, and their players stage an on-pitch conference.
74 min: Fernandez has a shot for Chelsea but cannot get beyond a wall of Napoli defenders. Di Lorenzo, all action, has gone down, and it looks nasty, as if he rolled over his ankle.
Giovanni Di Lorenzo gets treatment. Photograph: Andreas Solaro/AFP/Getty ImagesShare
Updated at 16.42 EST
73 min: Chelsea look far more comfortable in possession. Estevao is the player they want to get away but once he gets it, he is slow to release Joao Pedro.
71 min: Neither team look particularly full of flow at the moment. Garnacho is imminent for Chelsea.
69 min: Chelsea need another goal, it should be said. Though Napoli’s plight is deeper than theirs.
67 min: Napoli changes: Jesus off, Gutierrez on. Conte has only five outfield subs to choose from, of course. Though he could lump on one of his goalkeepers in a David James style.
65 min: Chelsea try to calm it down, just as their fans become audible for what feels like the first time this evening. They seem to still be at three at the back, too, with Chalobah adding his defensive ballast. Jeers as the away team hold the ball before Enzo Fernandez has a shot from distance.
64 min: AS IT STANDS: Chelsea 10th, Napoli 27th. Neither are where they’d like to be.
62 min: Barry Davies in 2002’s words will forever ring true. Napoli need to chase this now. Great finish by Joao Pedro, stunning, against the run of play but these things will happen.
ShareGoal! Napoli 2-2 Chelsea (Joao Pedro, 61)
Wow, what a hit from the striker. Cole Palmer dabs it forward, lovely turn and whack!
Joao Pedro of Chelsea scores his team’s second goal. Photograph: Francesco Pecoraro/Getty ImagesShare
Updated at 16.25 EST
59 min: Rosenior rolls the dice, with Gusto and Andrey Santos going off, Gittens on, and so is Chalobah. Four at the back, who knew?
58 min: Napoli are doing an Italian job, a Conte job here, trying to snuff out danger, not overcommitting. Memories of Barry Davies when Italy, coached by Giovanni Trappatoni, lost to South Korea: “They have only themselves to blame.”
57 min: It’s up to Chelsea to chase this but they are struggling to get hold of the ball. Napoli happy to retreat into five at the back when their opponent has possession.
55 min: Holjlund is doing a manful job in holding up the ball. At Manchester United, there were times the ball just wouldn’t stick. Surely that was all about confidence.
54 min: Though perhaps they fancy another. They are the team who don’t have to chase this.
53 min: Napoli are sat deeper than in the first half, or at least since they went behind. They are looking to the counter, trying to tempt Chelsea forward.
51 min: Napoli pressing high, Andrey Santos having to shimmy his way out of lumber as hordes of light blue shirts chase him down.
50 min: Liam Rosenior has his notebook out. What has he seen? What can he change? His team feel quite vulnerable to a Chelsea counter.
48 min: Chelsea get the ball, and again slow it down. This half, they can’t really afford to do that. Cucurella almost gets robbed when he plays it to Vergara who charges on but cannot find fellow scorer Hojlund.
46 min: What impact can Cole Palmer have? Feels like he’s been nursing his various muscles all season but Chelsea need him right now.
Half-time Chelsea change: Pedro Neto off, Cole Palmer on. Chelsea stay with three at the back.
AS IT STAND at half-time: Chelsea the odd team out of six Premier League clubs.
Colum Fordham gets in touch from Naples: “Writing from Naples where the atmosphere has just gone Vesuvian. The youngster Vergara was probably the shining light in Napoli’s weekend defeat against Juventus. But Madon, oh my god, he’s just pulled off a stunner with a turn worthy of Diego.
”I know Conte’s not got a good track record in this competition but he knows how to galvanise a team which is struck by injury (De Bruyne, Neres to name but a few). Forza Napoli (Come on Napoli)!”
ShareHalf-time: Napoli 2-1 Chelsea
The Chelsea task was to ride out the storm but it feels like they accentuated it by scoring. Napoli’s response has been exemplary, a lovely turn and finish by Vergara, and then Hojlund showing what he can do with a smartly taken goal. It’s all in the balance.
45+1 min: Napoli probably fancy another before half-time. Chelsea’s three-man defence and midfield are being picked off in what Jurgen Klopp used to call the “half spaces”.
45 min: Three minutes added on. Caicedo smashes into Elmas, and for his complaints, one of Conte’s coaches is booked.
44 min: Hojlund gets the thumbs up from Romelu Lukaku. Caicedo meanwhile appears to be questioning the formation. Not good signs. AS IT STANDS, Chelsea are 12th, Napoli are 19th.
ShareGoal! Napoli 2-1 Chelsea (Hojlund, 43)
Oh my, Chelsea caught napping, and in two passes they are behind. Olivera goes down the left, his pass inside is gobbled up first time by the Dane.
Napoli’s Rasmus Hojlund scores their second goal. Photograph: Ciro De Luca/ReutersShare
Updated at 15.49 EST
41 min: James steps across to coolly rob Hojlund. Chelsea, though, are struggling to keep the ball as they would like.
39 min: AS IT STANDS: A Bodo/Glimt goal against Atletico takes Chelsea back into the top eight. Meanwhile, they must ride out a storm, with Vergara, full of beans, taking on another shot.
38 min: Napoli putting it about a bit, flying into tackles. The home fans demand it, as does Antonio Conte. Chelsea seek to quell the danger with some precise passing; they do so to the sound of whistling and jeering.
36 min: Napoli pressing like demons now, Reece James finding himself hunted down by Elmas.
34 min: Vergara is normally a bit-part player, at 23 he’s yet to make much of breakthrough. AS IT STANDS, Chelsea down to ninth, and Napoli are 26th. The home team need a win or a shift of results.
ShareGoal! Napoli 1-1 Chelsea (Vergara, 33)
The youngster bobs and weaves after Napoli force the ball out. Vergara takes on Fofana and smashes home. Great goal. That’s only his fifth senior goal.
Antonio Vergara scores for Napoli. Photograph: Francesco Pecoraro/Getty ImagesVergara celebrates. Photograph: Ciro De Luca/ReutersShare
Updated at 15.40 EST
32 min: Rosenior deep in consultation with Reece James as there’s a break in play. He’s very hands on.
31 min: Di Lorenzo asked to defend, real box to box stuff, and asked to close down an Estevao spurt. Chelsea are giving Napoli little respite with their press.
30 min: This is a decent game, openings at both ends. Di Lorenzo has been all over the place, and Chelsea are struggling to pick him up. Napoli win a corner, and waste it again. Nicolas Jover’s doctrines yet to take off in Serie A.
Updated at 15.31 EST
29 min: Neto goes close, skipping beyond Olivera, and it takes Meret coming out to narrow the angle to prevent a second Chelsea goal.
27 min: Lobotka drops deep and send away Olivera, though he cannot find Hojlund, who knocks the ball behind. Napoli corner, a poor one, and Sanchez claims it, almost unchallenged.
25 min: This is a test for Chelsea’s nerve, under new management, a test of their coach. Rosenior is issuing plenty of instructions, asking his team to get tighter.
23 min: Napoli pile on the pressure, Di Lorenzo to the fore, with Cucurella having to make a heroic block when the ball falls to the Napoli captain.