Romelu Lukaku has 10 goals and eight assists in 26 Serie A games for Napoli this season
Romelu Lukaku starred in Napoli's win over Fiorentina as Antonio Conte's side remained a point behind leaders Inter in Serie A.
The Belgian international opened the scoring in the 26th minute, slotting in the rebound from Scott McTominay's strike.
Napoli ended a five-match winless run when Lukaku played a sublime ball into the path of Giacomo Raspadori to finish in the bottom corner on the hour mark. Albert Gudmundsson grabbed a consolation for eighth-placed Fiorentina, who suffered a third successive away defeat.
Inter came from two goals down to claim a dramatic 3-2 win against Monza at the San Siro on Saturday.
Bottom club Monza scored twice in 12 first-half minutes through Samuele Birindelli and Keita Balde Diao to secure the advantage.
However, Marko Arnautovic headed home just before the break and Hakan Calhanoglu levelled in the 64 minute, before a Giorgos Kyriakopoulos own goal gave Inter the victory that kept them in top spot.
Rivals AC Milan also overturned a two-goal deficit to win 3-2 at Leece. Nikola Krstovic struck twice, but an Antonino Gallo own goal gave Milan hope. Former Chelsea forward Christian Pulisic then scored twice as Milan completed a fine comeback.
Atalanta thrashed Juventus 4-0 on Sunday night to remain third and move six points clear of Thiago Motta's fourth-placed side.
Mateo Retegui opened the scoring in Turin from the penalty spot in the 26th minute, before Marten de Roon, Davide Zappacosta and Ademola Lookman added second-half strikes as Juve lost a home league game by a four-goal margin for the first time since 1967.
