UCL: Napoli 1-0 Liverpool
Lorenzo Insigne celebrates his 90th-minute winner
Lorenzo Insigne scored a dramatic 90th-minute winner as Napoli stunned Liverpool with 1-0 victory in the Champions League group stages.
Insigne struck in the final minute of normal time, converting Jose Callejon's inch-perfect cross on the stretch to spark wild celebrations at the Stadio San Paolo.
After Dries Mertens struck the crossbar, it was no more than Carlo Ancelotti's team deserved, having dominated the second half against a below-par Liverpool side, who lost Naby Keita to injury in the first half.
The victory lifts Napoli above Liverpool into top spot in Group C, which is now wide open following Paris Saint-Germain's 6-1 thrashing of Red Star Belgrade earlier on Wednesday.
Jurgen Klopp's team, having seen a credible point snatched from their grasp, have just four days to dust themselves down for Sunday's showdown with Manchester City.
Liverpool's performance was symptomatic of a side that - with a victory already on the board - did not need to win, and an uneventful first half littered with possession errors unfolded.
Keita's loose back pass on 11 minutes was pounced upon by Napoli and switched to Insigne, but he flashed a left-footed effort wide of Alisson's post.
Liverpool then lost Keita to injury on 18 minutes, his replacement Jordan Henderson tried to inject some vigour in midfield but Napoli withstood the brief revival.
The visitors had Alisson to thank on 33 minutes as he parried Arkadiusz Milik's shot on the swivel and gathered at the second attempt before the rebound was converted.
Napoli upped the ante in the second half with the addition of substitute Mertens. After Callejon saw a volley cleared off the line by Gomez, the Belgium international crashed an effort off the underside of the Liverpool bar.
With a point in sight, Liverpool's attacking presence steadily diminished as they failed to register a shot on target through the duration of the game.
That strategy backfired in the final minute as Napoli made their pressure tell. Callejon raced in behind the advanced Andrew Robertson and beat Alisson with a low cross which was poked home by Insigne, leaving Liverpool with no chance to respond.