Match ends, Lazio 0, Napoli 1.
Gonzalo Higuain scored the only goal as Napoli beat Lazio to move above the hosts into a Champions League spot.
Dries Mertens played a ball from his own half which the Argentina striker ran onto, before losing defender Stefan Radu and lashing the ball past keeper Etrit Berisha at his near post.
The result sees Napoli move two points above Lazio into third, the final Champions League spot.
After the game, Higuain played down reported interest from Liverpool.
"I am happy here. I have a contract here," the 27-year-old former Real Madrid forward told Sky Italia.
Rafael Benitez's Napoli are 10 points behind champions and leaders Juventus having played a game more.
In the day's afternoon games, AC Milan's poor season continued as they were beaten 1-0 by Atalanta, with German Denis scoring the only goal.
Sampdoria moved above Lazio into fourth with a 2-0 victory at Parma, who are now bottom of Serie A.
Gianfrano Zola's Cagliari salvaged a late 2-2 draw at Udinese with Danilo Avelar scoring an injury-time penalty.
Khouma Babacar scored an injury-time winner as Fiorentina beat Chievo 2-1, while Torino beat Cesena 3-2.
Genoa and Sassuolo played out an entertaining 3-3 draw with Ioannis Fetfatzidis scoring the hosts' equaliser in stoppage time.
- 39CavandaSubstituted forPereirinhaat 83'minutes
- 24LedesmaBooked at 16minsSubstituted forKloseat 45'minutes
- 16ParoloBooked at 43minsSubstituted forCataldiat 81'minutes
- 14KeitaBooked at 70mins
- 77GarganoBooked at 78mins
- 19López SilvaBooked at 32mins
- 6de GuzmánSubstituted forJorginhoat 83'minutes
- 14MertensBooked at 58minsSubstituted forHamsikat 62'minutes
- 9HiguaínSubstituted forZapataat 86'minutes
- 4Adriano Buss
- Nicola Rizzoli
- Shots on Target
Second Half ends, Lazio 0, Napoli 1.
Attempt saved. Keita (Lazio) right footed shot from outside the box is saved in the top right corner.
Attempt blocked. Filip Djordjevic (Lazio) header from the centre of the box is blocked. Assisted by Lucas Biglia with a cross.
Lorik Cana (Lazio) wins a free kick on the left wing.
Foul by Christian Maggio (Napoli).
Offside, Napoli. Marek Hamsik tries a through ball, but Duván Zapata is caught offside.
Corner, Napoli. Conceded by Bruno Pereirinha.
Attempt blocked. José Callejón (Napoli) with an attempt from the right side of the six yard box is blocked. Assisted by Marek Hamsik with a cross.
Delay over. They are ready to continue.
Delay in match Kalidou Koulibaly (Napoli) because of an injury.
Delay in match Rafael Cabral (Napoli) because of an injury.
Attempt saved. José Callejón (Napoli) right footed shot from the centre of the box is saved in the top right corner. Assisted by Duván Zapata with a cross.
Substitution, Napoli. Duván Zapata replaces Gonzalo Higuaín.
Lorik Cana (Lazio) wins a free kick in the defensive half.
Foul by Jorginho (Napoli).
Substitution, Napoli. Jorginho replaces Jonathan de Guzmán.
Substitution, Lazio. Bruno Pereirinha replaces Luis Pedro Cavanda.
Attempt missed. Antonio Candreva (Lazio) right footed shot from the left side of the six yard box is too high. Assisted by Keita with a cross.
Antonio Candreva (Lazio) wins a free kick in the attacking half.